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Philipp Oppermann 5aaee100c8 Archive comments of first edition (#504)
2018-12-09 17:31:37 +01:00

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<div id="isso-root"><div id="isso-113" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="fef3a081c8a1"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #5698c4"></rect><rect x="36" y="12" width="8" height="8" style="fill: #5698c4"></rect><rect x="4" y="20" width="8" height="8" style="fill: #5698c4"></rect><rect x="36" y="20" width="8" height="8" style="fill: #5698c4"></rect><rect x="4" y="28" width="8" height="8" style="fill: #5698c4"></rect><rect x="36" y="28" width="8" height="8" style="fill: #5698c4"></rect><rect x="12" y="12" width="8" height="8" style="fill: #5698c4"></rect><rect x="28" y="12" width="8" height="8" style="fill: #5698c4"></rect><rect x="20" y="4" width="8" height="8" style="fill: #5698c4"></rect><rect x="20" y="20" width="8" height="8" style="fill: #5698c4"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Ali Shapal</span><span class="spacer">•</span><a href="#isso-113" class="permalink"><time title="Mon Oct 26 2015 03:41:31 GMT+0100 (Central European Standard Time)" datetime="2015-09-01T02:41:31Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>great work in explaining how all the different pieces of hardware/software come together</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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<path d="M 24.773,13.701c-0.651,0.669-7.512,7.205-7.512,7.205C 16.912,21.262, 16.456,21.44, 16,21.44c-0.458,0-0.914-0.178-1.261-0.534 c0,0-6.861-6.536-7.514-7.205c-0.651-0.669-0.696-1.87,0-2.586c 0.698-0.714, 1.669-0.77, 2.522,0L 16,17.112l 6.251-5.995 c 0.854-0.77, 1.827-0.714, 2.522,0C 25.47,11.83, 25.427,13.034, 24.773,13.701z">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-115" class="isso-comment"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-115" class="permalink"><time title="Mon Oct 26 2015 10:02:30 GMT+0100 (Central European Standard Time)" datetime="2015-09-01T09:02:30Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>Thank you! </p></div><div class="isso-comment-footer"><span class="votes">-1</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div></div></div></div><div id="isso-116" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="a2f5a471da44"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="12" width="8" height="8" style="fill: #be5168"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Nitesh Chauhan</span><span class="spacer">•</span><a href="#isso-116" class="permalink"><time title="Mon Oct 26 2015 11:58:12 GMT+0100 (Central European Standard Time)" datetime="2015-09-01T10:58:12Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>awesome... :) i am definitely trying this out today...</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-117" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="87968996a36a"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="4" width="8" height="8" style="fill: #e279a3"></rect><rect x="4" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="4" y="36" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="36" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="36" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="36" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="36" width="8" height="8" style="fill: #e279a3"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Georgiy Slobodenyuk</span><span class="spacer">•</span><a href="#isso-117" class="permalink"><time title="Mon Oct 26 2015 14:06:58 GMT+0100 (Central European Standard Time)" datetime="2015-09-01T13:06:58Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>On mac OS X, for some reason, <br></p><pre><code><br>dd - (0xe85250d6 + 0 + (header_end - header_start))<br></code></pre><p>had no compiler warnings, while<br></p><pre><code><br>dd 0x100000000 - (0xe85250d6 + 0 + (header_end - header_start))<br></code></pre><p></p><p>led to </p><pre><code>multiboot_header.asm:7: warning: numeric constant 0x100000000 does not fit in 32 bits</code></pre><p></p><p>Mac OS X 10.11.1<br>NASM version 0.98.40 (Apple Computer, Inc. build 11) compiled on Oct 5 2015</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-118" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-118" class="permalink"><time title="Mon Oct 26 2015 14:22:48 GMT+0100 (Central European Standard Time)" datetime="2015-09-01T13:22:48Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>Well, that's unfortunate… Thank you for the hint, I opened an issue: <a href="https://github.com/phil-opp/blog_os/issues/11">https://github.com/phil-opp...</a></p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-134" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="4ac55151f530"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="28" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Arnaud Bailly</span><span class="spacer">•</span><a href="#isso-134" class="permalink"><time title="Thu Nov 12 2015 09:58:46 GMT+0100 (Central European Standard Time)" datetime="2015-10-04T08:58:46Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>I found I had to do</p><p> nasm -felf64 boot.S</p><p>to generate correct code, after doing `brew install nasm`.</p><p>HTH</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div></div></div></div><div id="isso-119" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="795b6c68aba8"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="36" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Tom Smeding</span><span class="spacer">•</span><a href="#isso-119" class="permalink"><time title="Tue Oct 27 2015 23:06:33 GMT+0100 (Central European Standard Time)" datetime="2015-09-02T22:06:33Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>If (in my case on Mac OS X) grub-mkrescue (after you've installed it) gives the error "grub-mkrescue: warning: Your xorriso doesn't support `--grub2-boot-info'.", you just need to install xorriso. You probably don't have it at all yet.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-124" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="17f81b7e4410"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="28" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Tom Yandell</span><span class="spacer">•</span><a href="#isso-124" class="permalink"><time title="Sat Oct 31 2015 08:59:44 GMT+0100 (Central European Standard Time)" datetime="2015-09-06T07:59:44Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>For me (running it in an ubuntu docker container), grub-mkrescue silently fails until you add the -v flag - only with that can you see the error about xorriso (took me a lot of head-scratching to figure it out).</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-125" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-125" class="permalink"><time title="Sat Oct 31 2015 13:32:43 GMT+0100 (Central European Standard Time)" datetime="2015-09-06T12:32:43Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>Thanks, I added a note about `--verbose`.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-128" class="isso-comment"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="6b0bfbf61b1e"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #e4bf80"></rect><rect x="36" y="4" width="8" height="8" style="fill: #e4bf80"></rect><rect x="12" y="4" width="8" height="8" style="fill: #e4bf80"></rect><rect x="28" y="4" width="8" height="8" style="fill: #e4bf80"></rect><rect x="12" y="12" width="8" height="8" style="fill: #e4bf80"></rect><rect x="28" y="12" width="8" height="8" style="fill: #e4bf80"></rect><rect x="12" y="28" width="8" height="8" style="fill: #e4bf80"></rect><rect x="28" y="28" width="8" height="8" style="fill: #e4bf80"></rect><rect x="12" y="36" width="8" height="8" style="fill: #e4bf80"></rect><rect x="28" y="36" width="8" height="8" style="fill: #e4bf80"></rect><rect x="20" y="28" width="8" height="8" style="fill: #e4bf80"></rect><rect x="20" y="36" width="8" height="8" style="fill: #e4bf80"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Reid</span><span class="spacer">•</span><a href="#isso-128" class="permalink"><time title="Mon Nov 02 2015 21:45:27 GMT+0100 (Central European Standard Time)" datetime="2015-10-01T20:45:27Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>./rs_decoder.h:2:Unknown pseudo-op: .macosx_version_min<br>./rs_decoder.h:2:Rest of line ignored. 1st junk character valued 49 (1).<br>clang: error: assembler command failed with exit code 1 (use -v to see invocation)<br>make[3]: *** [boot/i386/pc/lzma_decompress_image-startup_raw.o] Error 1</p></div><div class="isso-comment-footer"><span class="votes">-1</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-loader-119" class="isso-comment-loader"><a href="#" class="load_hidden">6 versteckt</a></div></div></div></div><div id="isso-121" class="isso-comment"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="6334312b9f4a"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="4" width="8" height="8" style="fill: #e279a3"></rect><rect x="4" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="4" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="4" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="4" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="36" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="36" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="36" width="8" height="8" style="fill: #e279a3"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">emk1024</span><span class="spacer">•</span><a href="#isso-121" class="permalink"><time title="Wed Oct 28 2015 20:50:01 GMT+0100 (Central European Standard Time)" datetime="2015-09-03T19:50:01Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p></p><p>This is an awesome series of blog posts!</p><p>If you don't see a green "OK", look for a "GRUB" message. If you don't see "GRUB", then the weak link is probably grub-mkrescue. Two common failure modes:</p><p>1. If your grub-mkrescue isn't installed correctly, it may silently do nothing or make bad ISO files. Try mounting your ISO file to make sure that it has your kernel and grub.cfg.</p><p>2. If you run Linux on an EFI machine, grub-mkrescue will produce EFI boot images that don't work with BIOS-based systems like QEMU. To fix this, see <a href="http://f.osdev.org/viewtopic.php?f=1&amp;p=244374">this article</a>, which recommends installing <code>grub-pc-bin</code> and running:</p><p></p><pre>grub-mkrescue /usr/lib/grub/i386-pc -o myos.iso isodir</pre><p></p></div><div class="isso-comment-footer"><span class="votes">2</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-122" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-122" class="permalink"><time title="Wed Oct 28 2015 21:52:35 GMT+0100 (Central European Standard Time)" datetime="2015-09-03T20:52:35Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>Thank you, I didn't know about the EFI issue... </p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-151" class="isso-comment"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="0e4be8f160a1"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #5698c4"></rect><rect x="36" y="12" width="8" height="8" style="fill: #5698c4"></rect><rect x="4" y="28" width="8" height="8" style="fill: #5698c4"></rect><rect x="36" y="28" width="8" height="8" style="fill: #5698c4"></rect><rect x="4" y="36" width="8" height="8" style="fill: #5698c4"></rect><rect x="36" y="36" width="8" height="8" style="fill: #5698c4"></rect><rect x="20" y="4" width="8" height="8" style="fill: #5698c4"></rect><rect x="20" y="20" width="8" height="8" style="fill: #5698c4"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Jon</span><span class="spacer">•</span><a href="#isso-151" class="permalink"><time title="Mon Jan 04 2016 03:16:47 GMT+0100 (Central European Standard Time)" datetime="2016-00-01T02:16:47Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>Thanks, that second tip saved me.</p></div><div class="isso-comment-footer"><span class="votes">1</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-295" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="f619bba41f30"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="28" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Anonym</span><span class="spacer">•</span><a href="#isso-295" class="permalink"><time title="Sun Jun 18 2017 22:17:12 GMT+0200 (Central European Summer Time)" datetime="2017-05-00T20:17:12Z">letztes Jahr</time></a><span class="note"></span></div><div class="text"><p>Thank you! This really helped.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div></div></div></div><div id="isso-123" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="17f81b7e4410"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="28" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Tom Yandell</span><span class="spacer">•</span><a href="#isso-123" class="permalink"><time title="Sat Oct 31 2015 07:53:37 GMT+0100 (Central European Standard Time)" datetime="2015-09-06T06:53:37Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>On OSX and found I needed x86_64‑elf‑ld and x86_64‑elf‑objdump. With macports was as simple as:</p><p>&gt; sudo port install x86_64-elf-gcc</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-135" class="isso-comment"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="4ac55151f530"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="28" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Arnaud Bailly</span><span class="spacer">•</span><a href="#isso-135" class="permalink"><time title="Thu Nov 12 2015 10:04:06 GMT+0100 (Central European Standard Time)" datetime="2015-10-04T09:04:06Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>This is definitely fun! I tried to do this from my Mac OS X (Yosemite) and could not properly boot my fresh ISO disk. Compilation works fine, I have installed a cross-compiler for x86_64-elf architecture, compiled grub following instructions here <a href="http://wiki.osdev.org/GRUB_2#Installing_GRUB2_on_Mac_OS_X">http://wiki.osdev.org/GRUB_...</a>... I generate a correct ISO file (checked it by mounting using Disk Utility) but it does not boot and I cannot see the GRUB message.</p><p>Not sure how to troubleshoot this issue.... I suspect this might be a problem with incorrect format in grub as the last stage of compilation shows this message:</p><p> ../grub/configure --build=x86_64-elf --target=x86_64-elf --disable-werror TARGET_CC=x86_64-elf-gcc TARGET_OBJCOPY=x86_64-elf-objcopy TARGET_STRIP=x86_64-elf-strip TARGET_NM=x86_64-elf-nm TARGET_RANLIB=x86_64-elf-ranlib LD_FLAGS=/usr/local/opt/flex/ CPP_FLAGS=/usr/local/opt/flex/include/</p><p>[..]</p><p>config.status: linking ../grub/include/grub/i386 to include/grub/cpu<br>config.status: linking ../grub/include/grub/i386/pc to include/grub/machine<br>config.status: executing depfiles commands<br>config.status: executing po-directories commands<br>config.status: creating po/POTFILES<br>config.status: creating po/Makefile<br>*******************************************************<br>GRUB2 will be compiled with following components:<br>Platform: i386-pc<br>With devmapper support: No (need libdevmapper header)<br>With memory debugging: No<br>With disk cache statistics: No<br>With boot time statistics: No<br>efiemu runtime: Yes<br>grub-mkfont: Yes<br>grub-mount: No (need FUSE headers)<br>starfield theme: No (No DejaVu found)<br>With libzfs support: No (need zfs library)<br>Build-time grub-mkfont: No (no fonts)<br>Without unifont (no build-time grub-mkfont)<br>With liblzma from -llzma (support for XZ-compressed mips images)<br>*******************************************************</p><p>I don't know what the i386-pc refer too, but if this is the target platform then it's probably incorrect. Note that I tried to boot using qemu-system-i386 but to no avail.</p><p>Regards,</p></div><div class="isso-comment-footer"><span class="votes">-1</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-136" class="isso-comment"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="4ac55151f530"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="28" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Arnaud Bailly</span><span class="spacer">•</span><a href="#isso-136" class="permalink"><time title="Thu Nov 12 2015 12:50:56 GMT+0100 (Central European Standard Time)" datetime="2015-10-04T11:50:56Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>Forget it: grub-mkrescue was not correctly installed so it failed to add needed boot files.</p><p>Thanks again for sharing this!</p></div><div class="isso-comment-footer"><span class="votes">1</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-137" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="6ce4166989a8"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="36" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Chris Cerami</span><span class="spacer">•</span><a href="#isso-137" class="permalink"><time title="Wed Nov 18 2015 05:27:08 GMT+0100 (Central European Standard Time)" datetime="2015-10-03T04:27:08Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>I'm having an issue where x86_64-elf-gcc isn't found when I try to configure grub, and when I checked I see that it's not included in binutils with the other x86_64-elf tools. How did get x86_64-elf-gcc on OS X?</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-138" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="4ac55151f530"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="28" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Arnaud Bailly</span><span class="spacer">•</span><a href="#isso-138" class="permalink"><time title="Wed Nov 18 2015 09:29:55 GMT+0100 (Central European Standard Time)" datetime="2015-10-03T08:29:55Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>It should be as simple as `brew install x86_64-elf-gcc x86_64-elf-binutils`</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-141" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="98301df94838"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="36" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">jcaudle</span><span class="spacer">•</span><a href="#isso-141" class="permalink"><time title="Mon Nov 23 2015 02:59:55 GMT+0100 (Central European Standard Time)" datetime="2015-10-01T01:59:55Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>It's probably worth noting that you'll need to do `brew tap sevki/gcc_cross_compilers` or `brew tap alexcrichton/formula` to get these formulae. (Sevki's tap has newer cross compilers)</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div></div></div></div><div id="isso-139" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="946b5756bcd3"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #9163b6"></rect><rect x="36" y="4" width="8" height="8" style="fill: #9163b6"></rect><rect x="4" y="20" width="8" height="8" style="fill: #9163b6"></rect><rect x="36" y="20" width="8" height="8" style="fill: #9163b6"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9163b6"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9163b6"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9163b6"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9163b6"></rect><rect x="12" y="12" width="8" height="8" style="fill: #9163b6"></rect><rect x="28" y="12" width="8" height="8" style="fill: #9163b6"></rect><rect x="12" y="20" width="8" height="8" style="fill: #9163b6"></rect><rect x="28" y="20" width="8" height="8" style="fill: #9163b6"></rect><rect x="20" y="4" width="8" height="8" style="fill: #9163b6"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9163b6"></rect><rect x="20" y="28" width="8" height="8" style="fill: #9163b6"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">George</span><span class="spacer">•</span><a href="#isso-139" class="permalink"><time title="Wed Nov 18 2015 21:43:38 GMT+0100 (Central European Standard Time)" datetime="2015-10-03T20:43:38Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>What would happen if we didn't put hlt? Would the cpu start reading random bytes and execute them as code? I tried without hlt and qemu seems to go into an infinite boot loop, but I'm just wondering what's going on.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-140" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-140" class="permalink"><time title="Wed Nov 18 2015 22:46:08 GMT+0100 (Central European Standard Time)" datetime="2015-10-03T21:46:08Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>Yes, that exactly what happens. The CPU simply tries to read the next instruction, even if it doesn't exist, until it causes some <a href="http://wiki.osdev.org/Exceptions">exception</a>. QEMU can print these exceptions, the "Setup Rust" post explains <a href="http://os.phil-opp.com/setup-rust.html#debugging">how</a>. I just tried it and it hits an Invalid Opcode exception at some point because some memory is no valid instruction.</p><p>Bonus: You can use GDB to disassemble the “code” behind the start label. You need to start `qemu-system-x86_64 -hda build/os-x86_64.iso -s -S` in one console and `gdb build/kernel-x86_64.bin` in another. Then you need the following gdb commands:</p><p>- `set architecture i386` because we are still in 32-bit mode<br>- `target remote :1234` to connect to QEMU<br>(- `disas /r start,+250` to disassemble the 250 bytes after the `start` label. Everything will be 0 as GRUB did not load our kernel yet)<br>- `break start` to set a breakpoint at `start`<br>- `continue` to continue execution until start is reached. Now the kernel is loaded and we can use<br>- `disas /r start,+250` to disassemble the 250 bytes after the `start` label</p><p>Then you can look at the faulting address you got from the QEMU debugging to see your invalid instruction. For me it seems to be an `add (%eax),%al` with the Opcode `02 00`.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div></div></div></div><div id="isso-145" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="cf86cb11d586"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #e4bf80"></rect><rect x="36" y="12" width="8" height="8" style="fill: #e4bf80"></rect><rect x="4" y="20" width="8" height="8" style="fill: #e4bf80"></rect><rect x="36" y="20" width="8" height="8" style="fill: #e4bf80"></rect><rect x="4" y="28" width="8" height="8" style="fill: #e4bf80"></rect><rect x="36" y="28" width="8" height="8" style="fill: #e4bf80"></rect><rect x="12" y="4" width="8" height="8" style="fill: #e4bf80"></rect><rect x="28" y="4" width="8" height="8" style="fill: #e4bf80"></rect><rect x="12" y="20" width="8" height="8" style="fill: #e4bf80"></rect><rect x="28" y="20" width="8" height="8" style="fill: #e4bf80"></rect><rect x="12" y="36" width="8" height="8" style="fill: #e4bf80"></rect><rect x="28" y="36" width="8" height="8" style="fill: #e4bf80"></rect><rect x="20" y="4" width="8" height="8" style="fill: #e4bf80"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Lifepillar</span><span class="spacer">•</span><a href="#isso-145" class="permalink"><time title="Sat Nov 28 2015 14:21:19 GMT+0100 (Central European Standard Time)" datetime="2015-10-06T13:21:19Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>Nice post! I am on OS X, but I find it easier to use Linux for this assembly stuff. Using VirtualBox, I have created a minimal Debian machine running an SSH server and with a folder shared between the OS X host and the Debian guest. So, I may install all the needed tools and cross-compile in Debian and have the final .iso accessible in OS X (to use it with QEMU), all of this while working in <a href="http://Terminal.app">Terminal.app</a> as usual.</p><p>As a side note, I had to set LDEMULATION="elf_x86_64" before linking, because I was getting this error: `ld: i386:x86-64 architecture of input file `multiboot_header.o' is incompatible with i386 output`. This may be because I have used Debian's 32-bit PC netinst iso instead of the 64-bit version.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-152" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="751af959926d"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="4" y="20" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="20" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="4" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="4" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="20" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="36" width="8" height="8" style="fill: #f19670"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Phil</span><span class="spacer">•</span><a href="#isso-152" class="permalink"><time title="Mon Feb 29 2016 07:18:34 GMT+0100 (Central European Standard Time)" datetime="2016-01-01T06:18:34Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>After creating the iso, I can boot to it on QEMU with no problem. Even burning it on to a disk and booting on a different machine works like a charm. However, I am having trouble getting it on to an USB thumb drive. I have tried packing it on to a USB with UNetbootin, but as soon as the UNetbootin screen appears after booting to the USB device, (The OS selection screen, giving you the options [Default] and [my_os]), nothing happens. I can select either of those options, but nothing happens.</p><p>EDIT: Got it to work using the command line tool dd!</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-153" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-153" class="permalink"><time title="Mon Feb 29 2016 10:28:20 GMT+0100 (Central European Standard Time)" datetime="2016-01-01T09:28:20Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>I just wanted to suggest dd! For the record, the command is <code>sudo dd if=build/os.iso of=/dev/sdX &amp;&amp; sync</code> where <code>sdX</code> is the device name of your USB stick. It overwrites everything on that device, so be careful to choose the correct device name.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div></div></div></div><div id="isso-158" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="3d75ac96d1cb"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #9163b6"></rect><rect x="36" y="4" width="8" height="8" style="fill: #9163b6"></rect><rect x="4" y="20" width="8" height="8" style="fill: #9163b6"></rect><rect x="36" y="20" width="8" height="8" style="fill: #9163b6"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9163b6"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9163b6"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9163b6"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9163b6"></rect><rect x="12" y="36" width="8" height="8" style="fill: #9163b6"></rect><rect x="28" y="36" width="8" height="8" style="fill: #9163b6"></rect><rect x="20" y="4" width="8" height="8" style="fill: #9163b6"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9163b6"></rect><rect x="20" y="36" width="8" height="8" style="fill: #9163b6"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">mopp</span><span class="spacer">•</span><a href="#isso-158" class="permalink"><time title="Sat Jun 11 2016 05:14:34 GMT+0200 (Central European Summer Time)" datetime="2016-05-06T03:14:34Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>Thanks you for your great articles.<br>I have created my OS in Rust, and these are really useful for me.<br>I have been revising my OS based on your articles.<br>Also, I have been writing an article which is similar to your<br><a href="http://mopp.github.io/articles/os/os00_intro">http://mopp.github.io/artic...</a></p><p>I added link into my articles to this website.<br>If you feel unpleasant, please tell me and I will remove it.</p><p>Thanks</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-162" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-162" class="permalink"><time title="Mon Jun 13 2016 16:26:17 GMT+0200 (Central European Summer Time)" datetime="2016-05-01T14:26:17Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>It's awesome! I really like that you start without a bootloader and interact with the BIOS directly in real mode. I never programmed at this level, so it was a really great read!</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-164" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="e2b849ae5dd0"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="28" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Antonio</span><span class="spacer">•</span><a href="#isso-164" class="permalink"><time title="Wed Aug 10 2016 16:54:25 GMT+0200 (Central European Summer Time)" datetime="2016-07-03T14:54:25Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>Hi guys if you want to boot the kernel in VirtualBox just modify the grub cfg file by setting the following variable properly, check <a href="https://www.gnu.org/software/grub/manual/grub.html#Configuration">https://www.gnu.org/softwar...</a> for the options.</p><p>GRUB_TERMINAL_OUTPUT</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-165" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="4827e190ca52"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="4" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="28" width="8" height="8" style="fill: #e279a3"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Andrii Zymohliad</span><span class="spacer">•</span><a href="#isso-165" class="permalink"><time title="Sat Aug 20 2016 15:44:09 GMT+0200 (Central European Summer Time)" datetime="2016-07-06T13:44:09Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>This blog is just a treasure! I'm so happy that I found it. Thank you so much Phil!</p><p>By the way, my Arch Linux is booted in legacy BIOS mode (my BIOS doesn't even support EFI), but without '-d /usr/lib/grub/i386-pc/' grub-mkrescue didn't work for me.</p><p>P.S. Aside from this project, I think I will refer to your Makefile lot of times in future just to learn techniques that you used. I think it is the shortest example of so many Makefile best practices.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-166" class="isso-comment"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-166" class="permalink"><time title="Sat Aug 20 2016 16:07:13 GMT+0200 (Central European Summer Time)" datetime="2016-07-06T14:07:13Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>Thanks a lot! :)</p><p>Unfortunately I have no idea what's the problem here. I've never had this error.</p></div><div class="isso-comment-footer"><span class="votes">-1</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-167" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="4827e190ca52"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="4" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="28" width="8" height="8" style="fill: #e279a3"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Andrii Zymohliad</span><span class="spacer">•</span><a href="#isso-167" class="permalink"><time title="Sat Aug 20 2016 18:10:34 GMT+0200 (Central European Summer Time)" datetime="2016-07-06T16:10:34Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>Ough.. probably you replied to first edition of my comment, but I didn't reload the page and didn't see your reply. Then I found my mistake (I put grub directory into the root of image, not into boot directory). And while thinking that nobody have seen my comment yet I edited it and removed the question about error. Sorry for my careless.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-168" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-168" class="permalink"><time title="Sat Aug 20 2016 18:23:59 GMT+0200 (Central European Summer Time)" datetime="2016-07-06T16:23:59Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>No worries! Good to hear that you could fix the error.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-170" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="86b3b33e7d7c"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="36" width="8" height="8" style="fill: #be5168"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Кирилл Царёв</span><span class="spacer">•</span><a href="#isso-170" class="permalink"><time title="Tue Aug 30 2016 21:15:11 GMT+0200 (Central European Summer Time)" datetime="2016-07-02T19:15:11Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>Why for the development of the core operation system, the language Rust? Why not C++? Does Rust have such opportunities as in C++?</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-171" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-171" class="permalink"><time title="Wed Aug 31 2016 11:05:57 GMT+0200 (Central European Summer Time)" datetime="2016-07-03T09:05:57Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>Rust aims to be comparable to C++, both it terms of capabilities and in terms of performance. However, it has some great advantages over C++:</p><p>The greatest advantage of Rust is its memory safety. It prevents common bugs such as use after free or dangling pointers at compile time. So you get the safety of a garbage collected language, but without garbage collection. In fact, the safety guarantees go even further: The compiler also prevents data races and iterator invalidation bugs. So we should get a much safer kernel compared to C++.</p><p>(One caveat: Sometimes we need <code>unsafe</code> blocks for OS development, which weaken some safety guarantees. However, we try to use them only when it's absolutely needed and try to check them thoroughly.)</p><p>Another advantage of Rust is the great type system. It allows us to create powerful, generic abstractions, even for low level things such as <a href="http://os.phil-opp.com/modifying-page-tables.html">page tables</a>.</p><p>The tooling is great, too. Rust uses a package manager called “cargo”, which makes it easy to add various libraries to our project. Cargo automatically downloads the correct version and compiles/links it. Thus, we can use awesome libraries such as <a href="https://github.com/gz/rust-x86">x86</a> easily.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-173" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-173" class="permalink"><time title="Wed Aug 31 2016 13:10:34 GMT+0200 (Central European Summer Time)" datetime="2016-07-03T11:10:34Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p></p><blockquote>so what Rust is to replace C++</blockquote><p></p><p>Sorry, I don't understand this question. Could you rephrase it?</p><p></p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-175" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="f852b3c6f433"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #9163b6"></rect><rect x="36" y="4" width="8" height="8" style="fill: #9163b6"></rect><rect x="4" y="20" width="8" height="8" style="fill: #9163b6"></rect><rect x="36" y="20" width="8" height="8" style="fill: #9163b6"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9163b6"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9163b6"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9163b6"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9163b6"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9163b6"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9163b6"></rect><rect x="12" y="20" width="8" height="8" style="fill: #9163b6"></rect><rect x="28" y="20" width="8" height="8" style="fill: #9163b6"></rect><rect x="20" y="20" width="8" height="8" style="fill: #9163b6"></rect><rect x="20" y="28" width="8" height="8" style="fill: #9163b6"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Lonami</span><span class="spacer">•</span><a href="#isso-175" class="permalink"><time title="Sun Mar 05 2017 14:53:08 GMT+0100 (Central European Standard Time)" datetime="2017-02-00T13:53:08Z">vor 2 Jahren</time></a><span class="note"></span></div><div class="text"><p>For anyone else struggling with "Boot failed: Could not read from CDROM (code 0009)", you need to install `grub-pc-bin` and then regenerate the .iso. Solution from here: <a href="http://intermezzos.github.io/book/appendix/troubleshooting.html#could-not-read-from-cdrom-code-0009">http://intermezzos.github.i...</a>.</p><p>By the way, I'm loving the tutorial style. Very clear, thank you!</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-177" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-177" class="permalink"><time title="Mon Apr 17 2017 13:05:57 GMT+0200 (Central European Summer Time)" datetime="2017-03-01T11:05:57Z">vor 2 Jahren</time></a><span class="note"></span></div><div class="text"><p>Thanks so much!</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-342" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="26509a9c211d"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="36" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="36" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="36" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="36" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="36" width="8" height="8" style="fill: #f19670"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philip</span><span class="spacer">•</span><a href="#isso-342" class="permalink"><time title="Thu Nov 09 2017 16:23:31 GMT+0100 (Central European Standard Time)" datetime="2017-10-04T15:23:31Z">letztes Jahr</time></a><span class="note"></span></div><div class="text"><p>I love you</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div></div></div></div><div id="isso-176" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="f2ed84334fcd"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="4" width="8" height="8" style="fill: #f19670"></rect><rect x="4" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="4" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="20" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="20" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="36" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="36" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="4" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="36" width="8" height="8" style="fill: #f19670"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">skierpage</span><span class="spacer">•</span><a href="#isso-176" class="permalink"><time title="Fri Mar 24 2017 07:29:32 GMT+0100 (Central European Standard Time)" datetime="2017-02-05T06:29:32Z">vor 2 Jahren</time></a><span class="note"></span></div><div class="text"><p>This is completely awesome!</p><p>YMMV but FWIW in Fedora 25, I needed to install three packages, `sudo dnf install nasm xorriso qemu-system-x86`. The last one installs fewer packages than installing "qemu" which adds two dozen ARM, m68k, S390, sparc, ... emulators as well 8-)</p><p>I find the example displays "OK" fine, but it erases the console before this so the boot messages disappear. I'm not sure if the fix lies in grub configuration or the qemu command line.</p><p>It is interesting to look at the contents of the CD-ROM image, though it mostly reveals the complexity of the GRUB bootloader. I used `mkdir temp_mount &amp;&amp; sudo mount -t iso9660 -o loop os.iso temp_mount` then looked around in temp_mount.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-279" class="isso-comment"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="fe556139e81d"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="4" y="20" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="20" width="8" height="8" style="fill: #f19670"></rect><rect x="4" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="4" y="36" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="36" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="36" width="8" height="8" style="fill: #f19670"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Harry Rigg</span><span class="spacer">•</span><a href="#isso-279" class="permalink"><time title="Sun May 14 2017 04:43:27 GMT+0200 (Central European Summer Time)" datetime="2017-04-00T02:43:27Z">vor 2 Jahren</time></a><span class="note"></span></div><div class="text"><p>I had 2 issues with making the iso. First, there was no output file, yet grub-mkrescue didn't complain, I fixed this by running "apt install xorriso" (Ubuntu). The other issue was that qemu couldn't read the cdrom (error 0009), fixed that one by running "apt install grub-pc-bin". Hope this helps some of you... and thanks for the awesome post Phil :)</p></div><div class="isso-comment-footer"><span class="votes">2</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div></div></div></div><div id="isso-296" class="isso-comment"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="349ee92fa8c7"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #447c69"></rect><rect x="36" y="4" width="8" height="8" style="fill: #447c69"></rect><rect x="4" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="36" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="4" y="20" width="8" height="8" style="fill: #447c69"></rect><rect x="36" y="20" width="8" height="8" style="fill: #447c69"></rect><rect x="4" y="36" width="8" height="8" style="fill: #447c69"></rect><rect x="36" y="36" width="8" height="8" style="fill: #447c69"></rect><rect x="12" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="28" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="20" y="4" width="8" height="8" style="fill: #447c69"></rect><rect x="20" y="12" width="8" height="8" style="fill: #447c69"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">M. Wagner</span><span class="spacer">•</span><a href="#isso-296" class="permalink"><time title="Mon Jun 19 2017 02:49:55 GMT+0200 (Central European Summer Time)" datetime="2017-05-01T00:49:55Z">letztes Jahr</time></a><span class="note"></span></div><div class="text"><p>The Makefile doesn't work for me. It gives only the error No rule to make target ' build/arch/x86_64/boot.o' needed by 'build/kernel-x86_64.bin'.
I don't know what's going wrong....</p></div><div class="isso-comment-footer"><span class="votes">-1</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-297" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="5db23f819f9f"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="36" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="4" y="20" width="8" height="8" style="fill: #447c69"></rect><rect x="36" y="20" width="8" height="8" style="fill: #447c69"></rect><rect x="12" y="4" width="8" height="8" style="fill: #447c69"></rect><rect x="28" y="4" width="8" height="8" style="fill: #447c69"></rect><rect x="12" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="28" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="12" y="20" width="8" height="8" style="fill: #447c69"></rect><rect x="28" y="20" width="8" height="8" style="fill: #447c69"></rect><rect x="12" y="28" width="8" height="8" style="fill: #447c69"></rect><rect x="28" y="28" width="8" height="8" style="fill: #447c69"></rect><rect x="12" y="36" width="8" height="8" style="fill: #447c69"></rect><rect x="28" y="36" width="8" height="8" style="fill: #447c69"></rect><rect x="20" y="4" width="8" height="8" style="fill: #447c69"></rect><rect x="20" y="28" width="8" height="8" style="fill: #447c69"></rect><rect x="20" y="36" width="8" height="8" style="fill: #447c69"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><a href="https://os.phil-opp.com" rel="nofollow" class="author">Philipp Oppermann</a><span class="spacer">•</span><a href="#isso-297" class="permalink"><time title="Mon Jun 19 2017 13:36:41 GMT+0200 (Central European Summer Time)" datetime="2017-05-01T11:36:41Z">letztes Jahr</time></a><span class="note"></span></div><div class="text"><p>It seems like there is some problem with this lines:</p>
<pre><code>build/arch/$(arch)/%.o: src/arch/$(arch)/%.asm
</code></pre>
<p>Do you have a file named <code>build/arch/x86_64/boot.asm</code>? For debugging, you could use explicit names instead of the wildcards (<code>%</code>):</p>
<pre><code>build/arch/$(arch)/boot.o: src/arch/$(arch)/boot.asm
</code></pre>
<p>(Note that you need to copy this rule for every <code>.asm</code> file without wildcards.)</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div></div></div></div><div id="isso-314" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="f3fe1ae9e640"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="20" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Anonym</span><span class="spacer">•</span><a href="#isso-314" class="permalink"><time title="Wed Jul 26 2017 07:45:57 GMT+0200 (Central European Summer Time)" datetime="2017-06-03T05:45:57Z">letztes Jahr</time></a><span class="note"></span></div><div class="text"><p>I'm interested whether it would run on actual hardware, with a real CD. I doubt anyone tried it though...</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-317" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="16a5ebe14cdd"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="4" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="20" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="20" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="4" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="36" width="8" height="8" style="fill: #f19670"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-317" class="permalink"><time title="Wed Aug 02 2017 16:40:32 GMT+0200 (Central European Summer Time)" datetime="2017-07-03T14:40:32Z">letztes Jahr</time></a><span class="note"></span></div><div class="text"><p>Yes, it works on real hardware! If not, please file an issue.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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Thanks man (y)</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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<p>I did have a couple of hiccups following along using Win10 WSL on a UEFI PC, maybe these details can be folded in to the tutorial?</p>
<p>1) Couldn't boot QEMU with emulated video device</p>
<pre><code>warning: TCG doesn't support requested feature: CPUID.01H:ECX.vmx [bit 5]
Could not initialize SDL(No available video device) - exiting
</code></pre>
<p>Solution: Use -curses option for qemu</p>
<p>qemu-system-x86_64 -curses -cdrom os-x86_64.iso</p>
<p>2) Could not boot from ISO (on a UEFI system)</p>
<pre><code> Booting from DVD/CD...
Boot failed: Could not read from CDROM (code 0004)
Booting from ROM...
</code></pre>
<p>Solution: sudo -S apt-get install grub-pc-bin</p></div><div class="isso-comment-footer"><span class="votes">-2</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-343" class="isso-comment"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="1d06bac27d5a"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="4" width="8" height="8" style="fill: #e279a3"></rect><rect x="4" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="4" y="36" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="36" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="4" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="4" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="36" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="36" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="36" width="8" height="8" style="fill: #e279a3"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Naad</span><span class="spacer">•</span><a href="#isso-343" class="permalink"><time title="Sun Nov 12 2017 23:16:40 GMT+0100 (Central European Standard Time)" datetime="2017-10-00T22:16:40Z">letztes Jahr</time></a><span class="note"></span></div><div class="text"><p>I am having the same issue as you have mentioned in number one. It says
warning: TCG doesn't support requested feature: CPUID.01H:ECX.vmx [bit 5]
And it is not printing out OK, I tried with the -curses option for qemu but not working.</p></div><div class="isso-comment-footer"><span class="votes">1</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div></div></div></div><div id="isso-340" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="06abd02685b7"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #447c69"></rect><rect x="36" y="4" width="8" height="8" style="fill: #447c69"></rect><rect x="4" y="20" width="8" height="8" style="fill: #447c69"></rect><rect x="36" y="20" width="8" height="8" style="fill: #447c69"></rect><rect x="12" y="20" width="8" height="8" style="fill: #447c69"></rect><rect x="28" y="20" width="8" height="8" style="fill: #447c69"></rect><rect x="12" y="36" width="8" height="8" style="fill: #447c69"></rect><rect x="28" y="36" width="8" height="8" style="fill: #447c69"></rect><rect x="20" y="4" width="8" height="8" style="fill: #447c69"></rect><rect x="20" y="20" width="8" height="8" style="fill: #447c69"></rect><rect x="20" y="28" width="8" height="8" style="fill: #447c69"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Myst</span><span class="spacer">•</span><a href="#isso-340" class="permalink"><time title="Tue Oct 31 2017 03:06:44 GMT+0100 (Central European Standard Time)" datetime="2017-09-02T02:06:44Z">letztes Jahr</time></a><span class="note"></span></div><div class="text"><p>I'm trying to do this, but I can't get the OK to actually display and I've kind of ran out of ideas. Trying to run with QEMU on Arch Linux.</p>
<p>Things I've tried:
Adding the multiboot tag that should tell grub I want a text mode, 80x25. Just gives me a black screen, instead of saying "Booting 'my os'"</p>
<p>Switching grub to text mode with every possible switch I can find that looks related, with and without ^. Just gives me a black screen for all of them too.
I can confirm my code actually seems to be executed - or, at least, hits the <code>hlt</code> instruction. Just that there's no output, which makes me think VGA problems, hence me trying all of the above. That seems to leave trying to parse the multiboot header or something, and that seems like... something I don't really want to try to do in assembly, including pushing it over assembly? I don't really want to move unless this works, though, because I see you still are using text mode extensively further on. :/</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-376" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="037b92af45fa"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="4" width="8" height="8" style="fill: #e279a3"></rect><rect x="4" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="4" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="36" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="12" y="36" width="8" height="8" style="fill: #e279a3"></rect><rect x="28" y="36" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="4" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="12" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="20" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="28" width="8" height="8" style="fill: #e279a3"></rect><rect x="20" y="36" width="8" height="8" style="fill: #e279a3"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Anonym</span><span class="spacer">•</span><a href="#isso-376" class="permalink"><time title="Fri Jan 26 2018 20:52:11 GMT+0100 (Central European Standard Time)" datetime="2018-00-05T19:52:11Z">vor 11 Monaten</time></a><span class="note"></span></div><div class="text"><p>Hi. Thanks for write, but i have an error when i run it in qemu - "error: no multiboot header found, error: you need to load kernel first". Whats wrong?</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div></div></div></div><div id="isso-384" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="185ab4565c55"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="4" width="8" height="8" style="fill: #f19670"></rect><rect x="4" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="4" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="4" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="20" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="20" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="28" width="8" height="8" style="fill: #f19670"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Fabio</span><span class="spacer">•</span><a href="#isso-384" class="permalink"><time title="Sat Feb 17 2018 00:13:10 GMT+0100 (Central European Standard Time)" datetime="2018-01-05T23:13:10Z">vor 10 Monaten</time></a><span class="note"></span></div><div class="text"><p>Thank you for this series, it's exceptional! Clear, deep into details, and fascinating :)</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div></div></div></div><div id="isso-403" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="38e17057e1d4"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="28" width="8" height="8" style="fill: #be5168"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Anonym</span><span class="spacer">•</span><a href="#isso-403" class="permalink"><time title="Tue Jun 05 2018 17:54:56 GMT+0200 (Central European Summer Time)" datetime="2018-05-02T15:54:56Z">vor 7 Monaten</time></a><span class="note"></span></div><div class="text"><p>For anyone trying to push themselves into using the GNU assembler (i.e. <code>as</code>), if you're getting "no multiboot header" errors with QEMU, put the line:</p>
<p><code>.align 8</code></p>
<p>before the end tags.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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{% endraw %}
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