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<!-- retain these comments for translator revision tracking -->
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mck |
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<!-- $Id: chroot-install.xml,v 1.5 2003/11/20 06:39:20 mck Exp $ -->
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toff |
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<sect1 id="linux-upgrade">
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<title>Installing Debian GNU/Linux from a Unix/Linux System</title>
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<para>
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This section explains how to install Debian GNU/Linux from an existing
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Unix or Linux system, without using the ncurses-based, menu-driven
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installer as explained in the rest of the manual. This "cross-install"
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HOWTO has been requested by users switching to Debian GNU/Linux from
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Redhat, Mandrake, and SUSE. In this section some familiarity with
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entering *nix commands and navigating the file system is assumed. In
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this section, <prompt>$</prompt> symbolizes a command to be entered in
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the user's current system, while <prompt>#</prompt> refers to a
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command entered in the Debian chroot.
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</para><para>
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Once you've got the new Debian system configured to your preference,
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you can migrate your existing user data (if any) to it, and keep on
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rolling. This is therefore a "zero downtime" Debian GNU/Linux
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install. It's also a clever way for dealing with hardware that
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otherwise doesn't play friendly with various boot or installation
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media.
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</para>
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<sect2>
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<title>Getting Started</title>
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<para>
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With your current *nix partitioning tools, repartition the hard
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drive as needed, creating at least one filesystem plus swap. You
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need at least 150MB of space available for a console only install,
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or at least 300MB if you plan to install X.
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</para><para>
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To create file systems on your partitions. For example, to create an
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ext3 file system on partition <filename>/dev/hda6</filename> (that's
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our example root partition):
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<informalexample><screen>
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$ mke2fs -j /dev/hda6
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</screen></informalexample>
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To create an ext2 file system instead, omit <userinput>-j</userinput>.
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</para><para>
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Initialize and activate swap (substitute the partition number for
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your intended Debian swap partition):
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<informalexample><screen>
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$ mkswap /dev/hda5
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$ sync; sync; sync
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$ swapon /dev/hda5
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</screen></informalexample>
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</para><para>
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Mount one partition as <filename>/mnt/debinst</filename> (the
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installation point, to be the root (<filename>/</filename>) filesystem
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on your new system). The mount point name is strictly arbitrary, it is
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referenced later below.
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<informalexample><screen>
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$ mkdir /mnt/debinst
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$ mount /dev/hda6 /mnt/debinst
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</screen></informalexample>
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</para>
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</sect2>
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<sect2>
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<title>Install <command>debootstrap</command></title>
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<para>
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The tool that the Debian installer uses, which is recognized as the
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official way to install a Debian base system, is
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<command>debootstrap</command>. It uses <command>wget</command>, but
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otherwise depends only on <classname>glibc</classname>. Install
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<command>wget</command> if it isn't already on your current system,
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then download and install <command>debootstrap</command>.
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</para><para>
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If you have an rpm-based system, you can use alien to convert the
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.deb into .rpm, or download an rpm-ized version at
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<ulink url="http://people.debian.org/~blade/install/debootstrap"></ulink>
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</para><para>
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Or, you can use the following procedure to install it
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manually. Make a work folder for extracting the .deb into:
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<informalexample><screen>
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$ mkdir work
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$ cd work
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</screen></informalexample>
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</para><para>
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The <command>debootstrap</command> binary is located in the Debian
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archive (be sure to select the proper file for your
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architecture). Download the <command>debootstrap</command> .deb from
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the <ulink url="http://ftp.debian.org/debian/pool/main/d/debootstrap/">
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pool</ulink>, copy the package to the work folder, and extract the
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binary files from it. You will need to have root privileges to install
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the binaries.
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<informalexample><screen>
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$ ar -xf debootstrap_0.X.X_arch.deb
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$ cd /
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$ zcat < /full-path-to-work/work/data.tar.gz | tar xv
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</screen></informalexample>
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</para>
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</sect2>
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<sect2>
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<title>Run <command>debootstrap</command> (Network-connected)</title>
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<para>
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<command>debootstrap</command> can download the needed files directly
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from the archive when you run it. You can substitute any Debian
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archive mirror for <userinput>http.us.debian.org/debian</userinput> in
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the command example below, preferably a mirror close to you
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network-wise. Mirrors are listed at
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<ulink url="http://www.debian.org/misc/README.mirrors"></ulink>.
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</para><para>
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If you have a woody version Debian GNU/Linux CD mounted at
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<filename>/cdrom</filename>, you could substitute a file URL instead
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of the http URL: <userinput>file:/cdrom/debian/</userinput>
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</para><para>
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Substitute one of the following for <replaceable>ARCH</replaceable>
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in the <command>debootstrap</command> command:
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<userinput>alpha</userinput>,
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<userinput>arm</userinput>,
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<userinput>hppa</userinput>,
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<userinput>i386</userinput>,
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<userinput>ia64</userinput>,
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<userinput>m68k</userinput>,
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<userinput>mips</userinput>,
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<userinput>mipsel</userinput>,
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<userinput>powerpc</userinput>,
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<userinput>s390</userinput>, or
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<userinput>sparc</userinput>.
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<informalexample><screen>
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$ /usr/sbin/debootstrap --arch ARCH woody \
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/mnt/debinst http://http.us.debian.org/debian
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</screen></informalexample>
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</para>
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</sect2>
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<sect2>
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<title>Run <command>debootstrap</command>
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(Using <filename>basedebs.tar</filename>)</title>
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<para>
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<command>debootstrap</command> can use the
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<filename>basedebs.tar</filename> file, if you have already downloaded
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it ahead of time. The <filename>basedebs.tar</filename> file is
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generated only every once in a while, so you'll get the latest version
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of the base system by pointing <command>debootstrap</command> directly
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to a Debian archive as shown in the previous section.
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</para><para>
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The <filename>basedebs.tar</filename> file is found in the
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<filename>base-images-current</filename> directory of the Debian
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archive for your architecture, for example:
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<ulink url="http://http.us.debian.org/debian/dists/woody/main/disks-&architecture;/base-images-current/basedebs.tar"></ulink>
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</para><para>
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Substitute one of the following for <replaceable>ARCH</replaceable> in the
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<command>debootstrap</command> command:
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<userinput>alpha</userinput>,
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<userinput>arm</userinput>,
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<userinput>hppa</userinput>,
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<userinput>i386</userinput>,
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<userinput>ia64</userinput>,
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<userinput>m68k</userinput>,
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<userinput>mips</userinput>,
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<userinput>mipsel</userinput>,
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<userinput>powerpc</userinput>,
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<userinput>s390</userinput>, or
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<userinput>sparc</userinput>.
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<informalexample><screen>
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$ /usr/sbin/debootstrap --arch ARCH --unpack-tarball \
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/path-to-downloaded/basedebs.tar woody /mnt/debinst
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</screen></informalexample>
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</para>
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</sect2>
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<sect2>
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<title>Configure The Base System</title>
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<para>
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Now you've got a real Debian system, though rather lean, on disk.
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<command>Chroot</command> into it:
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<informalexample><screen>
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$ chroot /mnt/debinst /bin/bash
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</screen></informalexample>
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</para>
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<sect3>
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<title>Mount Partitions</title>
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<para>
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You need to create <filename>/etc/fstab</filename>.
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<informalexample><screen>
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# editor /etc/fstab
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</screen></informalexample>
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</para><para>
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Here is a sample you can modify to suit:
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<informalexample><screen>
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# /etc/fstab: static file system information.
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#
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# file system mount point type options dump pass
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/dev/XXX / ext2 defaults 0 0
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/dev/XXX /boot ext2 ro,nosuid,nodev 0 2
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/dev/XXX none swap sw 0 0
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proc /proc proc defaults 0 0
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/dev/fd0 /mnt/floppy auto noauto,rw,sync,user,exec 0 0
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/dev/cdrom /mnt/cdrom iso9660 noauto,ro,user,exec 0 0
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/dev/XXX /tmp ext2 rw,nosuid,nodev 0 2
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/dev/XXX /var ext2 rw,nosuid,nodev 0 2
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/dev/XXX /usr ext2 rw,nodev 0 2
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/dev/XXX /home ext2 rw,nosuid,nodev 0 2
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</screen></informalexample>
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</para><para>
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Use <userinput>mount -a</userinput> to mount all the file systems you
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have specified in your <filename>/etc/fstab</filename>, or to mount
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file systems individually use:
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<informalexample><screen>
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# mount /path # e.g.: mount /usr
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</screen></informalexample>
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</para><para>
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You can mount the proc file system multiple times and to arbitrary
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locations, though /proc is customary. If you didn't use
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<userinput>mount -a</userinput>, be sure to mount proc before
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continuing:
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<informalexample><screen>
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# mount -t proc proc /proc
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</screen></informalexample>
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</para>
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toff |
5236 |
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<para>
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A RedHat user reports that on his system, this should be
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<informalexample><screen>
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# mount -t none proc /proc
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</screen></informalexample>
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</para>
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toff |
3352 |
</sect3>
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<sect3>
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<title>Configure Keyboard</title>
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<para>
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To configure your keyboard:
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<informalexample><screen>
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# dpkg-reconfigure console-data
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</screen></informalexample>
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</para>
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</sect3>
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<sect3>
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<title>Configure Networking</title>
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<para>
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To configure networking, edit
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<filename>/etc/network/interfaces</filename>,
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<filename>/etc/resolv.conf</filename>, and
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<filename>etc/hostname</filename>.
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<informalexample><screen>
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# editor /etc/network/interfaces
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</screen></informalexample>
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</para><para>
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Here are some simple examples from
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<filename>/usr/share/doc/ifupdown/examples</filename>:
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<informalexample><screen>
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######################################################################
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# /etc/network/interfaces -- configuration file for ifup(8), ifdown(8)
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# See the interfaces(5) manpage for information on what options are
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# available.
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######################################################################
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# We always want the loopback interface.
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#
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auto lo
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iface lo inet loopback
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# To use dhcp:
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#
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# auto eth0
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# iface eth0 inet dhcp
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# An example static IP setup: (broadcast and gateway are optional)
|
| 365 |
|
|
#
|
| 366 |
|
|
# auto eth0
|
| 367 |
|
|
# iface eth0 inet static
|
| 368 |
|
|
# address 192.168.0.42
|
| 369 |
|
|
# network 192.168.0.0
|
| 370 |
|
|
# netmask 255.255.255.0
|
| 371 |
|
|
# broadcast 192.168.0.255
|
| 372 |
|
|
# gateway 192.168.0.1
|
| 373 |
|
|
</screen></informalexample>
|
| 374 |
|
|
|
| 375 |
|
|
</para><para>
|
| 376 |
|
|
|
| 377 |
|
|
Enter your nameserver(s) and search directives in
|
| 378 |
|
|
<filename>/etc/resolv.conf</filename>:
|
| 379 |
|
|
|
| 380 |
|
|
<informalexample><screen>
|
| 381 |
|
|
|
| 382 |
|
|
# editor /etc/resolv.conf
|
| 383 |
|
|
|
| 384 |
|
|
</screen></informalexample>
|
| 385 |
|
|
|
| 386 |
|
|
</para><para>
|
| 387 |
|
|
|
| 388 |
|
|
A simple <filename>/etc/resolv.conf</filename>:
|
| 389 |
|
|
|
| 390 |
|
|
<informalexample><screen>
|
| 391 |
|
|
|
| 392 |
|
|
# search hqdom.local\000
|
| 393 |
|
|
# nameserver 10.1.1.36
|
| 394 |
|
|
# nameserver 192.168.9.100
|
| 395 |
|
|
|
| 396 |
|
|
</screen></informalexample>
|
| 397 |
|
|
|
| 398 |
|
|
</para><para>
|
| 399 |
|
|
|
| 400 |
|
|
Enter your system's host name (2 to 63 characters):
|
| 401 |
|
|
|
| 402 |
|
|
<informalexample><screen>
|
| 403 |
|
|
|
| 404 |
|
|
# echo DebianHostName > /etc/hostname
|
| 405 |
|
|
|
| 406 |
|
|
</screen></informalexample>
|
| 407 |
|
|
|
| 408 |
|
|
</para><para>
|
| 409 |
|
|
|
| 410 |
|
|
If you have multiple network cards, you should arrange the names of
|
| 411 |
|
|
driver modules in the <filename>/etc/modules</filename> file into the
|
| 412 |
|
|
desired order. Then during boot, each card will be associated with the
|
| 413 |
|
|
interface name (eth0, eth1, etc.) that you expect.
|
| 414 |
|
|
|
| 415 |
|
|
</para>
|
| 416 |
|
|
</sect3>
|
| 417 |
|
|
|
| 418 |
|
|
<sect3>
|
| 419 |
|
|
<title>Configure Timezone, Users, and APT</title>
|
| 420 |
|
|
|
| 421 |
|
|
<para>
|
| 422 |
|
|
|
| 423 |
|
|
Set your timezone, add a normal user, and choose your <command>apt</command>
|
| 424 |
|
|
sources by running
|
| 425 |
|
|
|
| 426 |
|
|
<informalexample><screen>
|
| 427 |
|
|
|
| 428 |
|
|
# /usr/sbin/base-config
|
| 429 |
|
|
|
| 430 |
|
|
</screen></informalexample>
|
| 431 |
|
|
</para>
|
| 432 |
|
|
</sect3>
|
| 433 |
|
|
|
| 434 |
|
|
<sect3>
|
| 435 |
|
|
<title>Configure Locales</title>
|
| 436 |
|
|
<para>
|
| 437 |
|
|
|
| 438 |
|
|
To configure your locale settings to use a language other than
|
| 439 |
|
|
English, install the locales support package and configure it:
|
| 440 |
|
|
|
| 441 |
|
|
<informalexample><screen>
|
| 442 |
|
|
|
| 443 |
|
|
# apt-get install locales
|
| 444 |
|
|
# dpkg-reconfigure locales
|
| 445 |
|
|
|
| 446 |
|
|
</screen></informalexample>
|
| 447 |
|
|
|
| 448 |
|
|
NOTE: Apt must be configured before, ie. during the base-config phase.
|
| 449 |
|
|
Before using locales with character sets other than ASCII or latin1,
|
| 450 |
|
|
please consult the appropriate localisation HOWTO.
|
| 451 |
|
|
|
| 452 |
|
|
</para>
|
| 453 |
|
|
</sect3>
|
| 454 |
|
|
</sect2>
|
| 455 |
|
|
|
| 456 |
|
|
<sect2>
|
| 457 |
|
|
<title>Install a Kernel</title>
|
| 458 |
|
|
|
| 459 |
|
|
<para>
|
| 460 |
|
|
|
| 461 |
|
|
If you intend to boot this system, you probably want a Linux kernel
|
| 462 |
|
|
and a boot loader. Identify available pre-packaged kernels with
|
| 463 |
|
|
|
| 464 |
|
|
<informalexample><screen>
|
| 465 |
|
|
|
| 466 |
|
|
# apt-cache search kernel-image
|
| 467 |
|
|
|
| 468 |
|
|
</screen></informalexample>
|
| 469 |
|
|
|
| 470 |
|
|
</para><para>
|
| 471 |
|
|
|
| 472 |
|
|
Then install your choice using its package name.
|
| 473 |
|
|
|
| 474 |
|
|
<informalexample><screen>
|
| 475 |
|
|
|
| 476 |
|
|
# apt-get install kernel-image-2.X.X-arch-etc
|
| 477 |
|
|
|
| 478 |
|
|
</screen></informalexample>
|
| 479 |
|
|
|
| 480 |
|
|
</para>
|
| 481 |
|
|
</sect2>
|
| 482 |
|
|
|
| 483 |
|
|
<sect2>
|
| 484 |
|
|
<title>Set up the Boot Loader</title>
|
| 485 |
|
|
<para>
|
| 486 |
|
|
|
| 487 |
|
|
To make your Debian GNU/Linux system bootable, set up your boot
|
| 488 |
|
|
loader to load the installed kernel with your new root partition.
|
| 489 |
|
|
|
| 490 |
toff |
4119 |
</para><para arch="i386">
|
| 491 |
toff |
3352 |
|
| 492 |
|
|
Check <userinput>man lilo.conf</userinput> for instructions on setting
|
| 493 |
|
|
up the bootloader. If you are keeping the system you used to install
|
| 494 |
|
|
Debian, just add an entry for the Debian install to your existing
|
| 495 |
|
|
lilo.conf. You could also copy it to the new system and edit it
|
| 496 |
|
|
there. After you are done editing, call lilo (remember it will use
|
| 497 |
|
|
lilo.conf relative to the system you call it from).
|
| 498 |
|
|
|
| 499 |
toff |
4119 |
</para><para arch="i386">
|
| 500 |
toff |
3352 |
|
| 501 |
|
|
Here is a basic /etc/lilo.conf as an example:
|
| 502 |
|
|
|
| 503 |
|
|
<informalexample><screen>
|
| 504 |
|
|
|
| 505 |
|
|
boot=/dev/hda6
|
| 506 |
|
|
root=/dev/hda6
|
| 507 |
|
|
install=/boot/boot-menu.b
|
| 508 |
|
|
delay=20
|
| 509 |
|
|
lba32
|
| 510 |
|
|
image=/vmlinuz
|
| 511 |
|
|
label=Debian
|
| 512 |
|
|
|
| 513 |
|
|
</screen></informalexample>
|
| 514 |
|
|
|
| 515 |
toff |
4119 |
</para><para arch="powerpc">
|
| 516 |
toff |
3352 |
|
| 517 |
|
|
Check <userinput>man yaboot.conf</userinput> for instructions on
|
| 518 |
|
|
setting up the bootloader. If you are keeping the system you used to
|
| 519 |
|
|
install Debian, just add an entry for the Debian install to your
|
| 520 |
|
|
existing yaboot.conf. You could also copy it to the new system and
|
| 521 |
|
|
edit it there. After you are done editing, call ybin (remember it will
|
| 522 |
|
|
use yaboot.conf relative to the system you call it from).
|
| 523 |
|
|
|
| 524 |
toff |
4119 |
</para><para arch="powerpc">
|
| 525 |
toff |
3352 |
|
| 526 |
|
|
Here is a basic /etc/yaboot.conf as an example:
|
| 527 |
|
|
|
| 528 |
|
|
<informalexample><screen>
|
| 529 |
|
|
|
| 530 |
|
|
boot=/dev/hda2
|
| 531 |
|
|
device=hd:
|
| 532 |
|
|
partition=6
|
| 533 |
|
|
root=/dev/hda6
|
| 534 |
|
|
magicboot=/usr/lib/yaboot/ofboot
|
| 535 |
|
|
timeout=50
|
| 536 |
|
|
image=/vmlinux
|
| 537 |
|
|
label=Debian
|
| 538 |
|
|
|
| 539 |
|
|
</screen></informalexample>
|
| 540 |
|
|
|
| 541 |
|
|
On some machines, you may need to use <userinput>ide0:</userinput>
|
| 542 |
|
|
instead of <userinput>hd:</userinput>.
|
| 543 |
|
|
|
| 544 |
mck |
6297 |
</para><para arch="not-i386;not-powerpc">
|
| 545 |
toff |
3352 |
|
| 546 |
toff |
4119 |
<phrase condition="FIXME">
|
| 547 |
toff |
3352 |
FIXME: Someone may eventually supply an example for this architecture.
|
| 548 |
toff |
4119 |
</phrase>
|
| 549 |
toff |
3352 |
|
| 550 |
|
|
</para>
|
| 551 |
|
|
</sect2>
|
| 552 |
|
|
</sect1>
|
Parent Directory
| 
Revision Log