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<?xml version='1.0' encoding='UTF-8'?> |
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<!DOCTYPE sections SYSTEM "/dtd/book.dtd"> |
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<!-- The content of this document is licensed under the CC-BY-SA license --> |
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<!-- See http://creativecommons.org/licenses/by-sa/2.5 --> |
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<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/draft/hb-install-ppc64-bootloader.xml,v 1.9 2006/02/26 18:20:29 fox2mike Exp $ --> |
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<sections> |
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|
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<version>2.8</version> |
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<date>2006-02-27</date> |
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|
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<section> |
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<title>Making your Choice</title> |
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<subsection> |
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<title>Introduction</title> |
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<body> |
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|
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<p> |
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Now that your kernel is configured and compiled and the necessary system |
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configuration files are filled in correctly, it is time to install a |
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program that will fire up your kernel when you start the system. Such a |
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program is called a <e>bootloader</e>. |
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</p> |
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|
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<p> |
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On Linux/PPC64 we have only yaBoot as a bootloader until grub2 is |
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finished. |
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</p> |
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|
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</body> |
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</subsection> |
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</section> |
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<section id="yaboot"> |
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<title>Using yaBoot</title> |
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<subsection> |
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<title>Introduction</title> |
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<body> |
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|
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<impo> |
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If you are using a 64-bit userland, you must use the <c>yaboot-static</c> |
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package because yaboot cannot be compiled as a 64-bit application. The 32-bit |
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userlands should use the regular yaboot package. |
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</impo> |
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|
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<p> |
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There are two ways to configure yaBoot for your system. You can use the |
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new and improved <c>yabootconfig</c> included with |
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<path>yaboot-1.3.8-r1</path> and later to automatically set up yaboot. If |
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for some reason you do not want to run <c>yabootconfig</c> to |
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automatically set up <path>/etc/yaboot.conf</path> or you are installing Gentoo |
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on a G5 (on which <c>yabootconfig</c> does not always work), you can just edit |
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the sample file already installed on your system. |
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</p> |
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|
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<impo> |
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yabootconfig/ybin won't work on IBM. You have to install yaboot another way: |
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<uri link="#yaboot-ibm">Using yaboot on IBM hardware</uri> |
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</impo> |
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|
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<note> |
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If your root filesystem uses the JFS filesystem, be sure to add <c>ro</c> as a |
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kernel parameter. JFS must be able to replay its log in read-only mode before it |
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gets mounted read-write. |
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</note> |
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|
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<ul> |
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<li><uri link="#yabootconfig">Default: Using yabootconfig</uri></li> |
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<li> |
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<uri link="#manual_yaboot">Alternative: Manual yaBoot Configuration</uri> |
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</li> |
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</ul> |
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|
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</body> |
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</subsection> |
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<subsection id="yabootconfig"> |
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<title>Default: Using yabootconfig</title> |
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<body> |
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|
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<p> |
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<c>yabootconfig</c> will auto-detect the partitions on your machine and will |
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set up dual and triple boot combinations with Linux, Mac OS, and Mac OS |
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X. |
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</p> |
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|
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<p> |
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To use <c>yabootconfig</c>, your drive must have a bootstrap partition, and |
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<path>/etc/fstab</path> must be configured with your Linux partitions. Both of |
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these should have been done already in the steps above. To start, ensure that |
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you have the latest version of yaboot installed by running <c>emerge --update |
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yaboot-static</c>. This is necessary as the latest version will be available via |
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Portage, but it may not have made it into the stage files. |
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</p> |
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|
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<pre caption = "Installing yaboot-static"> |
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<comment>(For 64-bit users)</comment> |
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# <i>emerge --update yaboot-static</i> |
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|
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<comment>(For 32-bit users)</comment> |
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# <i>emerge yaboot</i> |
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</pre> |
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|
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<p> |
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Now run <c>yabootconfig</c>. The program will run and it will confirm |
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the location of the bootstrap partition. Type <c>Y</c> if it is correct. If |
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not, double check <path>/etc/fstab</path>. yabootconfig will then scan your |
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system setup, create <path>/etc/yaboot.conf</path> and run <c>mkofboot</c> for |
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you. <c>mkofboot</c> is used to format the bootstrap partition, and install |
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the yaboot configuration file into it. |
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</p> |
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|
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<p> |
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You might want to verify the contents of <path>/etc/yaboot.conf</path>. If |
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you make changes to <path>/etc/yaboot.conf</path> (like setting the |
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default/boot OS), make sure to rerun <c>ybin -v</c> to apply changes to the |
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bootstrap partition. |
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</p> |
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|
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<p> |
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Now continue with <uri link="#reboot">Rebooting your System</uri>. |
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</p> |
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|
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</body> |
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</subsection> |
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<subsection id="manual_yaboot"> |
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<title>Alternative: Manual yaBoot Configuration</title> |
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<body> |
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|
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<p> |
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First make sure you have the latest <c>yaboot-static</c> installed on your |
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system: |
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</p> |
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|
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<pre caption = "Installing yaboot"> |
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<comment>(For 64-bit users)</comment> |
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# <i>emerge --update yaboot-static</i> |
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|
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<comment>(For 32-bit users)</comment> |
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# <i>emerge yaboot</i> |
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</pre> |
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|
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<p> |
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Below you find a completed <path>yaboot.conf</path> file. Alter it at |
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will. |
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</p> |
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|
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<pre caption = "/etc/yaboot.conf"> |
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<comment>## /etc/yaboot.conf |
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## |
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## run: "man yaboot.conf" for details. Do not make changes until you have!! |
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## see also: /usr/share/doc/yaboot/examples for example configurations. |
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## |
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## For a dual-boot menu, add one or more of: |
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## bsd=/dev/hdaX, macos=/dev/hdaY, macosx=/dev/hdaZ |
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|
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## our bootstrap partition:</comment> |
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|
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boot=/dev/hda2 |
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|
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<comment>## ofboot is the openfirmware way to specify the bootstrap partition. |
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## If this isn't defined, yaboot fails on the G5 and some G4s (unless |
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## you pass the necessary arguments to the mkofboot/ybin program). |
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## hd:X means /dev/sdaX (or /dev/hdaX).</comment> |
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|
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ofboot=hd:2 |
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<comment>## hd: is open firmware speak for hda</comment> |
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device=hd: |
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|
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delay=5 |
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defaultos=macosx |
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timeout=30 |
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install=/usr/lib/yaboot/yaboot |
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magicboot=/usr/lib/yaboot/ofboot |
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|
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<comment>################# |
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## This section can be duplicated if you have more than one kernel or set of |
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## boot options - replace 2.6.12 with your kernel-version |
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#################</comment> |
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image=/boot/kernel-2.6.12-gentoo-r10 |
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label=Linux |
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root=/dev/hda3 |
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partition=3 |
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read-only |
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|
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macos=hd:13 |
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macosx=hd:12 |
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enablecdboot |
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enableofboot |
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</pre> |
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|
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<p> |
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Once <path>yaboot.conf</path> is set up the way you want it, you run |
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<c>mkofboot -v</c> to install the settings in the bootstrap partition. |
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<e>Don't forget this!</e> Confirm when <c>mkofboot</c> asks you to create a new |
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filesystem. |
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</p> |
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|
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<p> |
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If all goes well, and you have the same |
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options as the sample above, your next reboot will give you a simple, |
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five-entry boot menu. If you update your yaboot config later on, you'll |
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just need to run <c>ybin -v</c> to update the bootstrap partition - |
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<c>mkofboot</c> is for initial setup only. |
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</p> |
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|
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<p> |
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For more information on yaboot, take a look at the <uri |
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link="http://penguinppc.org/projects/yaboot">yaboot project</uri>. For |
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now, continue the installation with <uri link="#reboot">Rebooting your |
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System</uri>. |
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</p> |
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|
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</body> |
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</subsection> |
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</section> |
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<section id="yaboot-ibm"> |
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<title>Using yaboot on IBM hardware</title> |
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<body> |
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|
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<p> |
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On IBM hardware you cannot run yabootconfig or ybin. You must proceed with the |
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following steps: |
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</p> |
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|
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<ul> |
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<li>Install yaboot-static</li> |
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<li>Run 'dd if=/usr/lib/yaboot/yaboot.chrp of=/dev/sdXX' (fill in XX |
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with your disk and partition for the PReP partition; this was in our |
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example /dev/sda1)</li> |
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<li>Next construct your own yaboot.conf file and place into /etc. |
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(Take a look at the config above, look into the man page of |
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yaboot.conf or look at the below yaboot.conf example)</li> |
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<li>Assuming your boot device in OF is pointing to the harddrive you |
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prep boot partition is on then it'll just work, otherwise at IPL time, |
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go into the multiboot menu and set the boot device to the one with |
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your prep boot partition.</li> |
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<li>That's it!</li> |
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</ul> |
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|
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<pre caption="yaboot.conf for IBM hardware"> |
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device=disk: |
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partition=2 |
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root=/dev/sda2 |
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default=2.6.12-gentoo-r10 |
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timeout=50 |
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|
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image=/boot/kernel-2.6.12-gentoo-r10 |
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label=Linux |
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append="console=ttyS0,9600" |
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read-only |
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</pre> |
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|
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<p> |
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For POWER4, POWER5, and blade-based hardware where the PReP disk partition |
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and the disk partition that contains your kernel are on the same physical disk, |
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you can use a simplified yaboot.conf. The following should be sufficient: |
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</p> |
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|
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<pre caption="yaboot.conf for PReP hardware"> |
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default = linux |
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timeout = 100 |
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image=/boot/kernel-2.6.12-gentoo-r10 |
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label=linux |
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read-only |
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root = /dev/sda2 |
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append="root=/dev/sda2" |
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</pre> |
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|
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<p> |
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To verify that yaboot has been copied to the PReP partition: |
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</p> |
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<pre caption="Verifying the yaboot install on PReP"> |
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# <i>dd if=/dev/sda1 count=10 | grep ELF</i> |
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Binary file (standard input) matches |
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10+0 records in |
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10+0 records out |
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</pre> |
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|
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<p> |
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A match signifies that yaboot was installed correctly. |
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</p> |
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|
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</body> |
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</section> |
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<section id="reboot"> |
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<title>Rebooting the System</title> |
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<subsection> |
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<body> |
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|
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<p> |
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Exit the chrooted environment and unmount all mounted partitions. Then type in |
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that one magical command you have been waiting for: <c>reboot</c>. |
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</p> |
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|
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<pre caption="Exiting the chroot, unmounting all partitions and rebooting"> |
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# <i>exit</i> |
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~# <i>cd</i> |
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~# <i>umount /mnt/gentoo/boot /mnt/gentoo/dev /mnt/gentoo/proc /mnt/gentoo</i> |
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~# <i>reboot</i> |
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</pre> |
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|
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<p> |
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Of course, don't forget to remove the bootable CD, otherwise the CD will be |
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booted again instead of your new Gentoo system. |
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</p> |
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|
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<p> |
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Once rebooted in your Gentoo installation, finish up with <uri |
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link="?part=1&chap=11">Finalizing your Gentoo Installation</uri>. |
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</p> |
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|
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</body> |
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</subsection> |
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</section> |
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|
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</sections> |
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