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<!-- retain these comments for translator revision tracking -->
<!-- $Id$ -->
<sect1 condition="bootable-disk" id="boot-drive-files">
<title>Preparing Files for Hard Disk Booting</title>
<para>
The installer may be booted using boot files placed on an
existing hard drive partition, either launched from another operating
system or by invoking a boot loader directly from the BIOS.
On modern UEFI systems, the kernel may be booted directly from the UEFI
partition without the need of a boot loader.
</para><para>
A full, <quote>pure network</quote> installation can be achieved using this
technique. This avoids all hassles of removable media, like finding
and burning CD/DVD images.
</para>
<!--
<para arch="powerpc">
The installer cannot boot from files on an HFS+ file system. MacOS
System 8.1 and above may use HFS+ file systems; NewWorld PowerMacs all
use HFS+. To determine whether your existing file system is HFS+,
select <userinput>Get Info</userinput> for the volume in question. HFS
file systems appear as <userinput>Mac OS Standard</userinput>, while
HFS+ file systems say <userinput>Mac OS Extended</userinput>. You must
have an HFS partition in order to exchange files between MacOS and
Linux, in particular the installation files you download.
</para><para arch="powerpc">
Different programs are used for hard disk installation system booting,
depending on whether the system is a <quote>NewWorld</quote> or an
<quote>OldWorld</quote> model.
</para>
-->
<sect2 arch="x86" id="files-grub">
<title>Hard disk installer booting from Linux using
<command>GRUB</command></title>
<para>
This section explains how to add to or even replace an existing linux
installation using
<command>GRUB</command>.
</para><para>
At boot time, <command>GRUB</command> supports loading in memory not
only the kernel, but also a disk image. This RAM disk can be used as
the root file-system by the kernel.
</para><para>
Copy the following files from the &debian; archives to a
convenient location on your hard drive, for instance to
<filename>/boot/newinstall/</filename>.
<itemizedlist>
<listitem><para>
<filename>vmlinuz</filename> (kernel binary)
</para></listitem>
<listitem><para>
<filename>initrd.gz</filename> (ramdisk image)
</para></listitem>
</itemizedlist>
</para><para>
If you intend to use the hard drive only for booting and then
download everything over the network, you should download the
&x86-netboot-initrd; file and its
corresponding kernel &x86-netboot-linux;. This will allow you
to repartition the hard disk from which you boot the installer, although you
should do so with care.
</para>
<para>
Alternatively, if you intend to keep an existing partition on the hard
drive unchanged during the install, you can download the
&x86-hdmedia-initrd; file and its kernel
&x86-hdmedia-vmlinuz;, as well as
copy an installation image to the hard drive (make sure the file is named ending in
<literal>.iso</literal>). The installer can then boot from the hard drive
and install from the installation image, without needing the network.
</para><para>
Finally, to configure the bootloader proceed to
<xref linkend="boot-initrd"/>.
</para>
</sect2>
<sect2 arch="x86" id="files-loadlin">
<title>Hard disk installer booting from DOS using <command>loadlin</command></title>
<para>
This section explains how to prepare your hard drive for booting the installer
from DOS using <command>loadlin</command>.
</para><para>
Copy the following directories from a &debian; installation image to <filename>c:\</filename>.
<itemizedlist>
<listitem><para>
<filename>/&x86-install-dir;</filename> (kernel binary and ramdisk image)
</para></listitem>
<listitem><para>
<filename>/tools</filename> (loadlin tool)
</para></listitem>
</itemizedlist>
</para>
</sect2>
</sect1>
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