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<section id="osloader">
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<span id="id1"></span><h1>OsLoader<a class="headerlink" href="#osloader" title="Permalink to this heading"></a></h1>
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<section id="introduction">
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<h2>Introduction<a class="headerlink" href="#introduction" title="Permalink to this heading"></a></h2>
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<p>OsLoader is a tightly-coupled payload for Slim Bootloader that natively supports the Linux Boot Protocol and is also capable of launching several different executable file formats (Multiboot ELF, ELF, PE32, UEFI-PI FV).</p>
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<p>If a payload is not specified in the SBL build command, OsLoader will be the default payload built with SBL.</p>
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<p>OsLoader expects the boot image to be packaged as an SBL Container. OsLoader verifies the boot image for secure boot purposes. Refer to the <a class="reference internal" href="../tools/GenContainer.html#gen-container-tool"><span class="std std-ref">Container Tool</span></a> document for more details on the Container format, and <a class="reference internal" href="../how-tos/create-container-boot-image.html#create-container-boot-image"><span class="std std-ref">Create Container Boot Image</span></a> document for how to create a container image.</p>
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<p>OsLoader can launch the Linux kernel directly when debug mode is enabled.</p>
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</section>
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<section id="osloader-boot-flow">
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<h2>OsLoader Boot Flow<a class="headerlink" href="#osloader-boot-flow" title="Permalink to this heading"></a></h2>
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<p>The flowchart below explains the boot flow when launching an OS using OsLoader.</p>
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<a class="reference internal image-reference" href="../_images/osldr_flow.png"><img alt="../_images/osldr_flow.png" src="../_images/osldr_flow.png" style="width: 750px;" /></a>
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<p>© Copyright 2018 - 2025, Intel Corporation.
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<span class="lastupdated">Last updated on Jun 24, 2025.
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