06f34bf2d8
Entering the boot loader menu has changed/simplified while reducing the boot time by .75 seconds. Now it is enough to hold one of shift/Esc/F8/F12/Space. Thanks! I've also updated the boot loader documentation to reflect the change, but I only mentioned holding shift. I know that changing the documention directly is not preferred anymore, but I wanted to make sure this patch is complete. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35050 a95241bf-73f2-0310-859d-f6bbb57e9c96
95 lines
4.8 KiB
HTML
95 lines
4.8 KiB
HTML
<?xml version="1.0" encoding="UTF-8" ?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
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"../../html-dtd/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US" xml:lang="en-US">
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<head>
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<!--
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*
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* Copyright 2008, Haiku. All rights reserved.
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* Distributed under the terms of the MIT License.
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*
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* Authors:
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* Humdinger <humdingerb@gmail.com>
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*
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-->
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<meta http-equiv="content-type" content="text/html; charset=utf-8" />
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<meta http-equiv="Content-Style-Type" content="text/css" />
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<meta name="robots" content="all" />
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<title>Boot Loader</title>
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<link rel="stylesheet" type="text/css" href="../../Haiku-doc.css" />
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</head>
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<body>
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<div class="logo">
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<img src="./images/logo.png" alt="logo" class="noprint" id="logo" name="logo" />
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</div>
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<div class="topnav">
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<p>
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<!-- «  <a href="installation.html">Installing Haiku</a>
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  ::  
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--> <a href="contents.html" class="uplink">Contents</a>
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  ::  
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<a href="filesystem-layout.html">Filesystem layout</a>  »
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</p>
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</div>
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<div class="content">
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<div class="title">Boot Loader</div>
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<p>Haiku's Boot Loader can help when you experience hardware related problems or want to choose which Haiku installation to start, if you have more than one (maybe on an installation CD or USB stick).<br />
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It's also handy after you installed a software component that acts up and prevents you from booting the system to remove it again. The <i>Disable user add-ons</i> option that's mentioned below, will start Haiku without loading user installed components, e.g. a driver.</p>
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<p>To enter the Boot Loader options, you have to press and keep holding the <span class="key">SHIFT</span> key before the beginning of Haiku's boot process. If you have a boot manager installed, you can start holding the <span class="key">SHIFT</span> key before invoking the boot entry for Haiku. If Haiku is the only operating system installed, you can start pressing <span class="key">SHIFT</span> while you still see boot messages from the BIOS.</p>
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<p><br /></p>
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<p>Once it's there, you're offered three menus:</p>
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<table summary="bootloader menus" border="0" cellspacing="0" cellpadding="2">
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<tr><td><b>Select boot volume</b></td><td> </td><td>Choose which Haiku installation to start.</td></tr>
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<tr><td><b>Select safe mode options</b><br />
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</td><td> </td><td>There are several options to try in case of hardware related trouble. When moving the selection bar to an option, a short explanation appears at the bottom of the screen.
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<p><i>- Safe mode<br />
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- Disable user add-ons<br />
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- Disable IDE DMA<br />
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- Use fail-safe video mode<br />
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- Don't call the BIOS<br />
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- Disable APM<br />
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- Disable ACPI<br />
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- Disable IO-APIC <span style="color:gray">    [only available when IO-APIC is detected]</span><br />
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- Disable LOCAL APIC <span style="color:gray">    [only available when LOCAL APIC is detected]</span><br />
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- Disable SMP <span style="color:gray">    [only available when more than one CPU core is detected]</span><br />
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- Enable serial debug output<br />
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- Enable on screen debug output</i>
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</p></td></tr>
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<tr><td class="onelinetop"><b>Select fail-safe video mode</b></td><td> </td><td>If you had to activate the option <i>Use fail-safe video mode</i>, you can set resolution and color depth.</td></tr>
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</table>
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<p><br /></p>
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<p>After activating one or more options, you return to the main menu and continue booting, which presents you with this boot screen:</p>
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<img src="../images/bootloader-images/boot-screen.png" alt="boot-screen.png" />
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<p>If everything works OK, one symbol after another quickly lights up.<br />
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The different symbols roughly correspond to these boot stages:</p>
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<table summary="layout" border="0" cellpadding="2" cellspacing="0">
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<tr><td><b>Atom</b></td><td style="width:10px;"> </td><td>Initializing modules.</td></tr>
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<tr><td><b>Disk + magnifier</b></td><td> </td><td>Creating rootfs (<span class="path">/</span>) and mounting devfs (<span class="path">/dev</span>).</td></tr>
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<tr><td><b>Plug-in card</b></td><td> </td><td>Initializing device manager.</td></tr>
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<tr><td><b>Boot disk</b></td><td> </td><td>Mounting boot disk.</td></tr>
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<tr><td><b>Chip</b></td><td> </td><td>Loading CPU specific modules.</td></tr>
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<tr><td><b>Folder</b></td><td> </td><td>Final initialization of subsystems.</td></tr>
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<tr><td><b>Rocket</b></td><td> </td><td>Boot script starting the system.</td></tr>
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</table>
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</div>
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<div class="bottomnav">
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<p>
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<!-- «  <a href="installation.html">Installing Haiku</a>
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  ::  
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--> <a href="contents.html" class="uplink">Contents</a>
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  ::  
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<a href="filesystem-layout.html">Filesystem layout</a>  »
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</p>
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</div>
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</body>
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</html>
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