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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/1.0 -->
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bennyc |
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<!-- $Header: /home/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-alpha-medium.xml,v 1.4 2004/04/15 11:59:45 swift Exp $ -->
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swift |
1.1 |
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<sections>
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<section>
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<title>Hardware Requirements</title>
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<subsection>
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<title>Introduction</title>
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<body>
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<p>
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Before we start, we first list what hardware requirements you need to
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successfully install Gentoo on your box. This of course depends on your
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architecture.
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</p>
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</body>
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</subsection>
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<subsection>
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<title>The Alpha Architecture</title>
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<body>
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<p>
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Check the following requirements before you
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continue with the Gentoo installation:
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</p>
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<ul>
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<li>
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You need at least 1 Gb of free disk space
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</li>
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<li>
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For the <e>Alpha architecture</e>, you should check with the <uri
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link="http://www.alphalinux.org/faq/FAQ-5.html">Alpha/Linux FAQ</uri>
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</li>
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</ul>
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</body>
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</subsection>
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</section>
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<section>
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<title>Make your Choice</title>
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<subsection>
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<title>Introduction</title>
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<body>
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<p>
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Still interested in trying out Gentoo? Well, then it is now time to
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choose the installation medium you want to use. Yes, you have the
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choice, no, they are not all equal, and yes, the result is always the same: a
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Gentoo base system.
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</p>
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<p>
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The installation media we will describe are:
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</p>
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<ul>
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<li>The Gentoo Alpha LiveCD</li>
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</ul>
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<p>
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Before we continue, let's explain our three-stage installation.
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</p>
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</body>
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</subsection>
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<subsection>
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<title>The Three Stages</title>
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<body>
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<p>
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Gentoo Linux can be installed using one of three <e>stage</e> tarball files.
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The one you choose depends on how much of the system you want to compile
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yourself. The <e>stage1</e> tarball is used when you want to bootstrap and
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build the entire system from scratch. The <e>stage2</e> tarball is used for
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building the entire system from a bootstrapped "semi-compiled" state.
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The <e>stage3</e> tarball already contains a basic Gentoo Linux system that has
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been built for you.
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</p>
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<p>
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Now what stage do you have to choose?
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</p>
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<p>
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Starting from a <e>stage1</e> allows you to have total control over the
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optimization settings and optional build-time functionality that is
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initially enabled on your system. This makes <e>stage1</e> installs good for
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power users who know what they are doing. It is also a great
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installation method for those who would like to know more about the
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inner workings of Gentoo Linux.
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</p>
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<table>
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<tr>
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<th>Stage1</th>
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<th>Pros and Cons</th>
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</tr>
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<tr>
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<th>+</th>
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<ti>
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Allows you to have total control over the optimization settings and optional
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build-time functionality that is initially enabled on your system
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</ti>
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</tr>
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<tr>
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<th>+</th>
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<ti>Suitable for powerusers that know what they are doing</ti>
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</tr>
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<tr>
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<th>+</th>
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<ti>Allows you to learn more about the inner workings of Gentoo</ti>
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</tr>
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<tr>
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<th>-</th>
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<ti>Takes a long time to finish the installation</ti>
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</tr>
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<tr>
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<th>-</th>
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<ti>
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If you don't intend to tweak the settings, it is probably a waste of time
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</ti>
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</tr>
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</table>
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<p>
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<e>Stage2</e> installs allow you to skip the bootstrap process and doing this
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is fine if you are happy with the optimization settings that we chose
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for your particular <e>stage2</e> tarball.
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</p>
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<table>
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<tr>
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<th>Stage2</th>
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<th>Pros and Cons</th>
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</tr>
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<tr>
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<th>+</th>
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<ti>You don't need to bootstrap</ti>
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</tr>
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<tr>
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<th>+</th>
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<ti>Faster than starting with stage1</ti>
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</tr>
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<tr>
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<th>+</th>
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<ti>You can still tweak your settings</ti>
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</tr>
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<tr>
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<th>-</th>
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<ti>You cannot tweak as much as with a stage1</ti>
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</tr>
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<tr>
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<th>-</th>
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<ti>It's not the fastest way to install Gentoo</ti>
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</tr>
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<tr>
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<th>-</th>
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<ti>You have to accept the optimizations we chose for the bootstrap</ti>
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</tr>
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</table>
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<p>
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Choosing to go with a <e>stage3</e> allows for the fastest install of Gentoo
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Linux, but also means that your base system will have the optimization
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settings that we chose for you (which to be honest, are good settings
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and were carefully chosen to enhance performance while maintaining
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stability). <e>stage3</e> is also required if you want to install Gentoo using
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prebuilt packages.
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</p>
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<table>
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<tr>
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<th>Stage3</th>
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<th>Pros and Cons</th>
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</tr>
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<tr>
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<th>+</th>
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<ti>Fastest way to get a Gentoo base system</ti>
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</tr>
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<tr>
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<th>-</th>
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<ti>You cannot tweak the base system - it's built already</ti>
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</tr>
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<tr>
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<th>-</th>
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<ti>You cannot brag about having used stage1 or stage2</ti>
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</tr>
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</table>
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<p>
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Write down (or remember) what stage you want to use. You need this later when
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you decide what LiveCD (or other installation medium) you want to use. You might
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be interested to know that, if you decide to use different optimization settings
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after having installed Gentoo, you will be able to recompile your entire system
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with the new optimization settings.
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</p>
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<p>
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Now take a look at the available installation media.
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</p>
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</body>
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</subsection>
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<subsection>
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<title>The Gentoo Alpha LiveCD</title>
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<body>
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<p>
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The <e>Gentoo Alpha LiveCD</e> is a bootable CD which contain a
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self-sustained Gentoo environment. It allows you to boot Linux from the CD.
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During the boot process your hardware is detected and the appropriate drivers
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are loaded. It is maintained by Gentoo developers.
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</p>
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<p>
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The <e>Gentoo Alpha LiveCD</e> is a small, no-nonsense, bootable CD which sole
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purpose is to boot the system, prepare the networking and continue with the
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Gentoo installation. It does not contain any stages (or, in some cases, a
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single stage1 file), source code or precompiled packages. For example the
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alpha variant of this LiveCD can be found in the
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<path>releases/1.4_rc1/alpha</path> subdirectory and is called
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<c>gentoo-alpha-1.4rc1-test3.iso.bz2</c>.
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</p>
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</body>
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</subsection>
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</section>
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<section>
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<title>Download, Burn and Boot the Gentoo LiveCD</title>
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<subsection>
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<title>Downloading and Burning the LiveCDs</title>
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<body>
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<p>
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You have chosen to use a Gentoo LiveCD (if not, then you are reading the
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wrong document). We'll first start by downloading and burning the chosen
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LiveCD.
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</p>
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<p>
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Visit one of our <uri
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link="/main/en/mirrors.xml">mirrors</uri> and go to
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<path>releases/1.4rc1/alpha</path> which is where the LiveCD(s) of your choice
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are located. Inside that directory you'll find so-called ISO-files. Those are
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full CD images which you can write on a CD-R.
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</p>
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<p>
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In case you wonder if your downloaded file is corrupted or not, you can
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check its MD5 checksum and compare it with the MD5 checksum we provide (such as
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<path>gentoo-alpha-1.4rc1-test3.iso.bz2.md5sum</path>). You can check the MD5
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checksum with the <c>md5sum</c> tool under Linux/Unix or <uri
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link="http://www.md5summer.org">md5summer</uri> for Windows.
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</p>
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<p>
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Once downloaded, decompress the ISO file (as it is stored in a compressed format
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using the Burrows-Wheeler text compression algorithm) using <c>bunzip2</c> (on
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Unix/Linux systems):
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</p>
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<pre caption="Decompressing the iso.bz2 file">
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# <i>bunzip2 gentoo-alpha-1.4rc1-test3.iso.bz2</i>
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</pre>
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<p>
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To burn the downloaded ISO(s), you have to select raw-burning. How you
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do this is highly program-dependent. We will discuss a couple of popular
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tools on how to do this.
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</p>
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<ul>
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<li>
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With EasyCD Creator you select <c>File</c>, <c>Record CD
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from CD image</c>. Then you change the <c>Files of type</c> to <c>ISO image
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file</c>. Then locate the ISO file and click <c>Open</c>. When you click on
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<c>Start recording</c> the ISO image will be burned correctly onto the CD-R.
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</li>
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<li>
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With Nero Burning ROM, select <c>File</c>, <c>Burn CD image</c>. Set the
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type of file to <c>*.*</c> and select the ISO file. Older versions of Nero
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will tell you they don't recognize the format -- confirm here, it does
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recognize it but doesn't know it yet :) In the next dialog, set the
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following parameters:
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<ul>
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<li>Type of image: <c>Data Mode 1</c></li>
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<li>Block size: <c>2048 bytes</c></li>
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<li>File precursor and length of the image trailer: <c>0 bytes</c></li>
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<li>Scrambled: <c>no</c></li>
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<li>Swapped: <c>no</c></li>
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</ul>
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Now click on <c>OK</c> and then <c>Burn</c> (the CD-R)
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</li>
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<li>
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With cdrecord, you simply type <c>cdrecord dev=/dev/hdc</c> (replace
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<path>/dev/hdc</path> with your CD-RW drive's device path) followed
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by the path to the ISO file :)
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</li>
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swift |
1.2 |
<li>
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bennyc |
1.5 |
With K3B, select <c>Tools</c> > <c>CD</c> > <c>Burn Image</c>. Then
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you can locate your ISO file within the 'Image to Burn' area. Finally click
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swift |
1.2 |
<c>Start</c>.
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</li>
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swift |
1.1 |
</ul>
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</body>
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</subsection>
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<subsection>
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<title>Booting the Alpha LiveCD(s)</title>
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<body>
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<p>
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When your Alpha is powered on, the first thing that gets started is the
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firmware. It is loosely synonymous with the BIOS software on PC systems. There
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are two types of firmware on Alpha systems: SRM (<e>Systems Reference
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Manual</e>) and ARC (<e>Advanced Risc Console</e>).
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</p>
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<p>
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SRM is based on the Alpha Console Subsystem specification, which provides an
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operating environment for OpenVMS, Tru64 UNIX, and Linux operating systems. ARM
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is based on the Advanced RISC Computing (ARC) specification, which provides
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an operating environment for Windows NT.
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</p>
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<p>
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If your Alpha system supports both SRC and ARCs (ARC, AlphaBIOS, ARCSBIOS) you
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should follow <uri link="http://www.alphalinux.org/faq/x31.html">these
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instructions</uri> for switching to SRM. If your system already uses SRM, you
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are all set. If your system can only use ARCs (Ruffian, nautilus, xl, etc.) you
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will need to choose <c>MILO</c> later on when we are talking about bootloaders.
|
| 339 |
|
|
</p>
|
| 340 |
|
|
|
| 341 |
|
|
<p>
|
| 342 |
|
|
Now to boot an Alpha LiveCD, put the CD-ROM in the tray and reboot the system.
|
| 343 |
|
|
You can use SRM to boot the LiveCD. If you cannot do that, you will have to use
|
| 344 |
|
|
<c>MILO</c>. If you don't have <c>MILO</c> installed already, use one of the
|
| 345 |
|
|
precompiled <c>MILO</c> images available on <uri
|
| 346 |
|
|
link="http://dev.gentoo.org/~taviso/milo/">taviso's homepage</uri>.
|
| 347 |
|
|
</p>
|
| 348 |
|
|
|
| 349 |
|
|
<pre caption="Booting a CD-ROM using SRM">
|
| 350 |
|
|
<comment>(List available hardware drives)</comment>
|
| 351 |
|
|
>>> <i>show device</i>
|
| 352 |
|
|
dkb0.0.1.4.0 DKB0 TOSHIBA CDROM
|
| 353 |
|
|
<comment>(...)</comment>
|
| 354 |
|
|
<comment>(Substitute dkb0 with your CD-ROM drive device)</comment>
|
| 355 |
|
|
>>> <i>boot dkb0 -flags 0</i>
|
| 356 |
|
|
</pre>
|
| 357 |
|
|
|
| 358 |
|
|
<pre caption="Booting a CD-ROM using MILO">
|
| 359 |
|
|
<comment>(Substitute hdb with your CD-ROM drive device)</comment>
|
| 360 |
|
|
MILO> <i>boot hdb:boot/vmlinuz initrd=initrd.img root=/dev/ram0 init=/linuxrc</i>
|
| 361 |
|
|
</pre>
|
| 362 |
|
|
|
| 363 |
|
|
<p>
|
| 364 |
|
|
You should have a root ("#") prompt on the current console and can also switch
|
| 365 |
|
|
to other consoles by pressing Alt-F2, Alt-F3 and Alt-F4. Get back to the one you
|
| 366 |
|
|
started on by pressing Alt-F1.
|
| 367 |
|
|
</p>
|
| 368 |
|
|
|
| 369 |
|
|
<p>
|
| 370 |
|
|
Now continue with <uri link="#hardware">Extra Hardware Configuration</uri>.
|
| 371 |
|
|
</p>
|
| 372 |
|
|
|
| 373 |
|
|
</body>
|
| 374 |
|
|
</subsection>
|
| 375 |
|
|
<subsection id="hardware">
|
| 376 |
|
|
<title>Extra Hardware Configuration</title>
|
| 377 |
|
|
<body>
|
| 378 |
|
|
|
| 379 |
|
|
<p>
|
| 380 |
|
|
When the Live CD boots, it tries to detect all your hardware devices and
|
| 381 |
|
|
loads the appropriate kernel modules to support your hardware. In the
|
| 382 |
|
|
vast majority of cases, it does a very good job. However, in some cases (the
|
| 383 |
|
|
SPARC LiveCDs don't even do autodetection), it may not auto-load the kernel
|
| 384 |
|
|
modules you need. If the PCI auto-detection missed some of your system's
|
| 385 |
|
|
hardware, you will have to load the appropriate kernel modules manually.
|
| 386 |
|
|
</p>
|
| 387 |
|
|
|
| 388 |
|
|
<p>
|
| 389 |
|
|
In the next example we try to load the <c>8139too</c> module (support for
|
| 390 |
|
|
certain kinds of network interfaces):
|
| 391 |
|
|
</p>
|
| 392 |
|
|
|
| 393 |
|
|
<pre caption="Loading kernel modules">
|
| 394 |
|
|
# <i>modprobe 8139too</i>
|
| 395 |
|
|
</pre>
|
| 396 |
|
|
|
| 397 |
|
|
</body>
|
| 398 |
|
|
</subsection>
|
| 399 |
|
|
<subsection>
|
| 400 |
|
|
<title>Optional: Tweaking Hard Disk Performance</title>
|
| 401 |
|
|
<body>
|
| 402 |
|
|
|
| 403 |
|
|
<p>
|
| 404 |
|
|
If you are an advanced user, you might want to tweak the IDE hard disk
|
| 405 |
|
|
performance using <c>hdparm</c>. With the <c>-tT</c> options you can
|
| 406 |
|
|
test the performance of your disk (execute it several times to get a
|
| 407 |
|
|
more precise impression):
|
| 408 |
|
|
</p>
|
| 409 |
|
|
|
| 410 |
|
|
<pre caption="Testing disk performance">
|
| 411 |
|
|
# <i>hdparm -tT /dev/hda</i>
|
| 412 |
|
|
</pre>
|
| 413 |
|
|
|
| 414 |
|
|
<p>
|
| 415 |
|
|
To tweak, you can use any of the following examples (or experiment
|
| 416 |
|
|
yourself) which use <path>/dev/hda</path> as disk (substitute with your
|
| 417 |
|
|
disk):
|
| 418 |
|
|
</p>
|
| 419 |
|
|
|
| 420 |
|
|
<pre caption="Tweaking hard disk performance">
|
| 421 |
|
|
<comment>Activate DMA:</comment> # <i>hdparm -d 1 /dev/hda</i>
|
| 422 |
|
|
<comment>Activate DMA + Safe Performance-enhancing Options:</comment> # <i>hdparm -d 1 -A 1 -m 16 -u 1 -a 64 /dev/hda</i>
|
| 423 |
|
|
</pre>
|
| 424 |
|
|
|
| 425 |
|
|
</body>
|
| 426 |
|
|
</subsection>
|
| 427 |
|
|
<subsection>
|
| 428 |
|
|
<title>Optional: User Accounts</title>
|
| 429 |
|
|
<body>
|
| 430 |
|
|
|
| 431 |
|
|
<p>
|
| 432 |
|
|
If you plan on giving other people access to your installation
|
| 433 |
|
|
environment or you want to chat using <c>irssi</c> without root privileges (for
|
| 434 |
|
|
security reasons), you need to create the necessary user accounts and change
|
| 435 |
|
|
the root password.
|
| 436 |
|
|
</p>
|
| 437 |
|
|
|
| 438 |
|
|
<p>
|
| 439 |
|
|
To change the root password, use the <c>passwd</c> utility:
|
| 440 |
|
|
</p>
|
| 441 |
|
|
|
| 442 |
|
|
<pre caption="Changing the root password">
|
| 443 |
|
|
# <i>passwd</i>
|
| 444 |
|
|
New password: <comment>(Enter your new password)</comment>
|
| 445 |
|
|
Re-enter password: <comment>(Re-enter your password)</comment>
|
| 446 |
|
|
</pre>
|
| 447 |
|
|
|
| 448 |
|
|
<p>
|
| 449 |
swift |
1.4 |
To create a user account, we first enter their credentials, followed by
|
| 450 |
swift |
1.1 |
its password. We use <c>useradd</c> and <c>passwd</c> for these tasks.
|
| 451 |
|
|
In the next example, we create a user called "john".
|
| 452 |
|
|
</p>
|
| 453 |
|
|
|
| 454 |
|
|
<pre caption="Creating a user account">
|
| 455 |
|
|
# <i>useradd john</i>
|
| 456 |
|
|
# <i>passwd john</i>
|
| 457 |
|
|
New password: <comment>(Enter john's password)</comment>
|
| 458 |
|
|
Re-enter password: <comment>(Re-enter john's password)</comment>
|
| 459 |
|
|
</pre>
|
| 460 |
|
|
|
| 461 |
|
|
<p>
|
| 462 |
|
|
You can change your user id from root to the newly created user by using
|
| 463 |
|
|
<c>su</c>:
|
| 464 |
|
|
</p>
|
| 465 |
|
|
|
| 466 |
|
|
<pre caption="Changing user id">
|
| 467 |
|
|
# <i>su john -</i>
|
| 468 |
|
|
</pre>
|
| 469 |
|
|
|
| 470 |
|
|
</body>
|
| 471 |
|
|
</subsection>
|
| 472 |
|
|
<subsection>
|
| 473 |
|
|
<title>Optional: Starting the SSH Daemon</title>
|
| 474 |
|
|
<body>
|
| 475 |
|
|
|
| 476 |
|
|
<p>
|
| 477 |
|
|
If you want to allow other users to access your computer during the
|
| 478 |
|
|
Gentoo installation (perhaps because those users are going to help you
|
| 479 |
|
|
install Gentoo, or even do it for you), you need to create a user
|
| 480 |
|
|
account for them and perhaps even provide them with your root password
|
| 481 |
|
|
(<e>only</e> do that <e>if</e> you <b>fully trust</b> that user).
|
| 482 |
|
|
</p>
|
| 483 |
|
|
|
| 484 |
|
|
<p>
|
| 485 |
|
|
To fire up the SSH daemon, execute the following command:
|
| 486 |
|
|
</p>
|
| 487 |
|
|
|
| 488 |
|
|
<pre caption="Starting the SSH daemon">
|
| 489 |
|
|
# <i>/etc/init.d/sshd start</i>
|
| 490 |
|
|
</pre>
|
| 491 |
|
|
|
| 492 |
|
|
<p>
|
| 493 |
|
|
To be able to use sshd, you first need to setup your networking. Continue with
|
| 494 |
|
|
the chapter on <uri link="?part=1&chap=3">Configuring your Network</uri>.
|
| 495 |
|
|
</p>
|
| 496 |
|
|
|
| 497 |
|
|
</body>
|
| 498 |
|
|
</subsection>
|
| 499 |
|
|
</section>
|
| 500 |
|
|
</sections>
|