source: BOOK/final-system/x86/grub.xml@ e487b49

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;
]>
<sect1 id="ch-system-grub" role="wrap">
  <?dbhtml filename="grub.html"?>

  <title>GRUB-&grub-version;</title>

  <indexterm zone="ch-system-grub">
    <primary sortas="a-GRUB">GRUB</primary>
  </indexterm>

  <sect2 role="package">
    <title/>

    <para>The GRUB package contains the GRand Unified Bootloader.</para>

  </sect2>

  <sect2 role="installation">
    <title>Installation of GRUB</title>

    <note os="n1">
      <para>If you would like use a different bootloader than this
      one you can go to the following link for alterative bootloaders
      and the instructions to use them. 
      <ulink url="http://trac.cross-lfs.org/wiki/bootloaders"/></para>
    </note>

    <note os="n2">
      <para>This package is known to have issues when its default optimization
      flags (including the <option>-march</option> and <option>-mcpu</option>
      options) are changed. If any environment variables that override default
      optimizations have been defined, such as <envar>CFLAGS</envar> and
      <envar>CXXFLAGS</envar>, unset them when building GRUB.</para>
    </note>

    <para os="s1">Glibc-2.17 does not declare gets():</para>

<screen os="s2"><userinput>sed -i -e '/gets is a/d' grub-core/gnulib/stdio.in.h</userinput></screen>

    <para os="a">Prepare GRUB for compilation:</para>

<screen os="b"><userinput>./configure --prefix=/usr \
    --sysconfdir=/etc --disable-werror</userinput></screen>

    <para os="c">Compile the package:</para>

<screen os="d"><userinput>make</userinput></screen>

    <para os="e">To test GRUB you must have QEMU installed and then, issue:
    <userinput>make check</userinput>.</para>

    <para os="f">Install the package:</para>

<screen os="g"><userinput>make install</userinput></screen>

  </sect2>

  <sect2 id="conf-grub" role="configuration">
    <title>Configuring GRUB</title>

    <indexterm zone="conf-grub">
      <primary sortas="a-GRUB">GRUB</primary>
    <secondary>configuring</secondary></indexterm>

    <indexterm zone="conf-grub">
      <primary sortas="e-/etc/default/grub">/etc/default/grub</primary>
    </indexterm>

    <para>Now that grub is installed, we need to configure the defaults that
    will be used to generate the configuration after we install the kernel.
    Create this file with the following:</para>

<screen><userinput>install -m755 -dv /etc/default
cat &gt; /etc/default/grub &lt;&lt; "EOF"
<literal># Begin /etc/default/grub

GRUB_DEFAULT=0
#GRUB_SAVEDEFAULT=true
GRUB_HIDDEN_TIMEOUT=
GRUB_HIDDEN_TIMEOUT_QUIET=false
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=Cross-LFS

GRUB_CMDLINE_LINUX=""
GRUB_CMDLINE_LINUX_DEFAULT=""

#GRUB_TERMINAL=console
#GRUB_GFXMODE=640x480
#GRUB_GFXPAYLOAD_LINUX=keep

#GRUB_DISABLE_LINUX_UUID=true
#GRUB_DISABLE_LINUX_RECOVERY=true

#GRUB_INIT_TUNE="480 440 1"

#GRUB_DISABLE_OS_PROBER=true

# End /etc/default/grub</literal>
EOF</userinput></screen>

    <variablelist>
      <title>The meaning of the above options and possible alternate
      values:</title>

    <varlistentry>
      <term><parameter>GRUB_DEFAULT=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_SAVEDEFAULT=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_HIDDEN_TIMEOUT=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_HIDDEN_TIMEOUT_QUIET=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_TIMEOUT=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_DISTRIBUTOR=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_CMDLINE_LINUX=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_CMDLINE_LINUX_DEFAULT=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_TERMINAL=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_GFXMODE=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_GFXPAYLOAD_LINUX=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_DEFAULT=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_DISABLE_LINUX_UUID=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_DISABLE_LINUX_RECOVERY=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_INIT_TUNE=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    <varlistentry>
      <term><parameter>GRUB_DISABLE_OS_PROBER=</parameter></term>
      <listitem>
        <para>Write Me</para>
      </listitem>
    </varlistentry>

    </variablelist>

  </sect2>

  <sect2 id="contents-grub" role="content">
    <title>Contents of GRUB</title>

    <segmentedlist>
      <segtitle>Installed programs</segtitle>
      <segtitle>Installed directories</segtitle>

      <seglistitem>
        <seg>grub, grub-install, grub-md5-crypt, grub-set-default, grub-terminfo, and mbchk</seg>
        <seg>/usr/lib/grub, /boot/grub</seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="grub">
        <term><command>grub</command></term>
        <listitem>
          <para>The Grand Unified Bootloader's command shell</para>
          <indexterm zone="ch-system-grub grub">
            <primary sortas="b-grub">grub</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="grub-install">
        <term><command>grub-install</command></term>
        <listitem>
          <para>Installs GRUB on the given device</para>
          <indexterm zone="ch-system-grub grub-install">
            <primary sortas="b-grub-install">grub-install</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="grub-md5-crypt">
        <term><command>grub-md5-crypt</command></term>
        <listitem>
          <para>Encrypts a password in MD5 format</para>
          <indexterm zone="ch-system-grub grub-md5-crypt">
            <primary sortas="b-grub-md5-crypt">grub-md5-crypt</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="grub-set-default">
        <term><command>grub-set-default</command></term>
        <listitem>
          <para>Sets the default boot entry for GRUB</para>
          <indexterm zone="ch-system-grub grub-set-default">
            <primary sortas="b-grub-set-default">grub-set-default</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="grub-terminfo">
        <term><command>grub-terminfo</command></term>
        <listitem>
          <para>Generates a terminfo command from a terminfo name; it can be
          employed if an unknown terminal is being used</para>
          <indexterm zone="ch-system-grub grub-terminfo">
            <primary sortas="b-grub-terminfo">grub-terminfo</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="mbchk">
        <term><command>mbchk</command></term>
        <listitem>
          <para>Checks the format of a multi-boot kernel</para>
          <indexterm zone="ch-system-grub mbchk">
            <primary sortas="b-mbchk">mbchk</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>