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study/boot/Bootdisk-HOWTO/Bootdisk-HOWTO-v450/x68.html
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study/boot/Bootdisk-HOWTO/Bootdisk-HOWTO-v450/x68.html
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<HTML
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><HEAD
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><TITLE
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>Introduction</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.63
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"><LINK
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REL="HOME"
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TITLE="The Linux Bootdisk HOWTO"
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HREF="index.html"><LINK
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REL="PREVIOUS"
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TITLE="Preface"
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HREF="x21.html"><LINK
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REL="NEXT"
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TITLE="Bootdisks and the boot process"
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HREF="x88.html"></HEAD
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><BODY
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CLASS="SECT1"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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LINK="#0000FF"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>The Linux Bootdisk HOWTO</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="x21.html"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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></TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="x88.html"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="AEN68"
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>2. Introduction</A
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></H1
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><P
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>Linux boot disks are useful in a number of situations, such as testing a
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new kernel, recovering from a disk failure (anything from a lost boot
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sector to a disk head crash), fixing a disabled system, or upgrading
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critical system files safely (such as <TT
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CLASS="FILENAME"
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>libc.so</TT
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>).</P
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><P
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>There are several ways of obtaining boot disks:
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<P
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></P
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><UL
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><LI
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><P
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>Use one from a distribution such as Slackware. This will at
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least allow you to boot.
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</P
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></LI
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><LI
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><P
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>Use a rescue package to set up disks designed to be used
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as rescue disks.
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</P
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></LI
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><LI
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><P
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>Learn what is required for each of the types of disk to operate,
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then build your own.</P
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></LI
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></UL
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>
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Some people choose the last option so they can do it themselves. That way,
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if something breaks, they can work out what to do to fix it. Plus it's a
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great way to learn about how a Linux system works.</P
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><P
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>This document assumes some basic familiarity with Linux system
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administration concepts. For example, you should know about
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directories, filesystems and floppy diskettes. You should know how to
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use <B
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CLASS="COMMAND"
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>mount</B
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> and <B
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CLASS="COMMAND"
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>df</B
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>. You should
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know what <TT
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CLASS="FILENAME"
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>/etc/passwd</TT
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> and
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<TT
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CLASS="FILENAME"
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>fstab</TT
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> files are for and what they look like. You
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should know that most of the commands in this HOWTO should be run as
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root.</P
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><P
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>Constructing a bootdisk from scratch can be complicated. If you
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haven't read the Linux FAQ and related documents, such as the Linux
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Installation HOWTO and the Linux Installation Guide, you should not be
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trying to build boot diskettes. If you just need a working bootdisk
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for emergencies, it is <EM
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>much</EM
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> easier to download a
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prefabricated one. See <A
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HREF="premade.html"
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>Appendix A.1</A
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>, below, for where to
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find these.</P
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="x21.html"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="index.html"
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>Home</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="x88.html"
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>Next</A
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></TD
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></TR
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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>Preface</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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> </TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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>Bootdisks and the boot process</TD
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></TR
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></TABLE
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></DIV
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></BODY
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></HTML
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>
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