Update to GRUB-1.97

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@9088 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

1 files changed, 158 insertions, 253 deletions

diff --git a/chapter08/grub.xml b/chapter08/grub.xml
index f8c4efcad..bfe9bc510 100644
--- a/chapter08/grub.xml
+++ b/chapter08/grub.xml
@@ -14,96 +14,10 @@
     <address>&grub-url;</address>
   </sect1info>
 
-  <title>GRUB-&grub-version;</title>
-
-  <indexterm zone="ch-bootable-grub">
-    <primary sortas="a-Grub">GRUB</primary>
-  </indexterm>
-
-  <sect2 role="package">
-    <title/>
-
-    <para>The GRUB package contains the GRand Unified Bootloader.</para>
-
-    <segmentedlist>
-      <segtitle>&buildtime;</segtitle>
-      <segtitle>&diskspace;</segtitle>
-
-      <seglistitem>
-        <seg>&grub-ch6-sbu;</seg>
-        <seg>&grub-ch6-du;</seg>
-      </seglistitem>
-    </segmentedlist>
-
-  </sect2>
-
-  <sect2 role="installation">
-    <title>Installation of GRUB</title>
-
-    <para>Your shiny new LFS system is almost complete. One of the last
-    things to do is to ensure that the system can be properly booted.</para>
-
-    <caution>
-      <para>This package will only build for x86 and x86_64 architectures
-      containing 32-bit libs. If you chose to build on x86_64 without 32-bit
-      libraries (no multilib), then you must use LILO instead. Information on
-      <quote>boot loading</quote> for other architectures should be available in
-      the usual resource-specific locations for those architectures.</para>
-    </caution>
-
-    <para>This package is known to have issues when its default
-    optimization flags (including the <parameter>-march</parameter> and
-    <parameter>-mcpu</parameter> 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>
-
-    <para>Start by applying the following patch to allow for better drive
-    detection, fix some GCC 4.x issues, and provide better SATA support
-    for some disk controllers:</para>
-
-<screen><userinput remap="pre">patch -Np1 -i ../&grub-geometry-patch;</userinput></screen>
-
-    <para>By default, GRUB doesn't support ext2 filesystems with 256-byte inodes.
-    Fix this by applying the following patch:</para>
-
-<screen><userinput remap="pre">patch -Np1 -i ../&grub-inode-patch;</userinput></screen>
-
-    <para>Prepare GRUB for compilation:</para>
-
-<screen><userinput remap="configure">./configure --prefix=/usr</userinput></screen>
-
-    <para>Compile the package, but use custom optimization flags to
-    prevent an error flagged in the test routines:</para>
-
-<screen><userinput remap="make">make CFLAGS="-march=i486 -mtune=native -Os"</userinput></screen>
-
-    <para>To test the results, issue:</para>
-
-<screen><userinput remap="test">make check</userinput></screen>
-
-    <para>Install the package:</para>
-
-<screen><userinput remap="install">make install
-mkdir -v /boot/grub
-cp -v /usr/lib/grub/i386-pc/stage{1,2} /boot/grub</userinput></screen>
-
-    <para>Replace <filename class="directory">i386-pc</filename> with whatever
-    directory is appropriate for the hardware in use.</para>
-
-    <para>The <filename class="directory">i386-pc</filename> directory
-    contains a number of <filename>*stage1_5</filename> files, different
-    ones for different file systems. Review the files available and copy
-    the appropriate ones to the <filename
-    class="directory">/boot/grub</filename> directory. Most users will
-    copy the <filename>e2fs_stage1_5</filename> and/or
-    <filename>reiserfs_stage1_5</filename> files.</para>
-
-  </sect2>
-
-  <sect2 role="configuration">
-    <title>Configuring GRUB</title>
+  <title>Using GRUB to Set Up the Boot Process</title>
 
+  <sect2>
+    <title>Introduction</title>
 
     <para>Boot loading can be a complex area, so a few cautionary
     words are in order. Be familiar with the current boot loader and any other
@@ -113,194 +27,185 @@ cp -v /usr/lib/grub/i386-pc/stage{1,2} /boot/grub</userinput></screen>
     unusable (un-bootable).</para>
 
     <para>The procedure involves writing some special GRUB files to specific
-    locations on the hard drive. We highly recommend creating a GRUB boot floppy
-    diskette as a backup. Insert a blank floppy diskette and run the following
-    commands:</para>
-
-<screen><userinput>dd if=/boot/grub/stage1 of=/dev/fd0 bs=512 count=1
-dd if=/boot/grub/stage2 of=/dev/fd0 bs=512 seek=1</userinput></screen>
-
-    <para>Remove the diskette and store it somewhere safe. Now, run the
-    <command>grub</command> shell:</para>
+    locations on the hard drive. We highly recommend creating a GRUB boot
+    floppy diskette as a backup. Insert a blank floppy diskette and run the
+    following commands:</para>
 
-<screen><userinput>grub</userinput></screen>
+<screen role="nodump"><userinput>cd /tmp
+grub-mkrescue --image-type=floppy floppy.img
+dd if=floppy.img of =/def/fd0 bs=1440 count=1</userinput></screen>
 
     <para>GRUB uses its own naming structure for drives and partitions in
     the form of <emphasis>(hdn,m)</emphasis>, where <emphasis>n</emphasis>
     is the hard drive number and <emphasis>m</emphasis> is the partition
-    number, both starting from zero. For example, partition <filename
-    class="partition">hda1</filename> is <emphasis>(hd0,0)</emphasis> to
-    GRUB and <filename class="partition">hdb3</filename> is
-    <emphasis>(hd1,2)</emphasis>. In contrast to Linux, GRUB does not
+    number. The hard drive number starts from zero, but he partition number
+    starts from one for normal partitions and five for extended partitions.  
+    Note that this is different form earlier versions where 
+    both numbers started from zero. For example, partition <filename
+    class="partition">sda1</filename> is <emphasis>(hd0,1)</emphasis> to
+    GRUB and <filename class="partition">sdb3</filename> is
+    <emphasis>(hd1,3)</emphasis>. In contrast to Linux, GRUB does not
     consider CD-ROM drives to be hard drives. For example, if using a CD
     on <filename class="partition">hdb</filename> and a second hard drive
     on <filename class="partition">hdc</filename>, that second hard drive
     would still be <emphasis>(hd1)</emphasis>.</para>
 
+    <para>You can determine what GRUB thinks your disk devices are by running:</para>
+
+<screen role="nodump"><userinput>grub-mkdevicemap --verbose --device-map=device.map
+cat device.map</userinput></screen>
+
+    <para>The location of the boot partition is a choice of the user that
+    affects the configuration.  One recommendation is to have a separate small
+    (suggested size is 100 MB) partition just for boot information.  That way
+    each build, whether LFS or some commercial distro, can access the same boot
+    files and access can be made from any booted system.  If you choose to do
+    this, you will need to mount the separate partition, move all files in the
+    current <filename class="directory">/boot</filename> directory (e.g. the
+    linux kernel you just built in the previous section) to the new partition.
+    You will then need to unmount the partition and remount it as <filename
+    class="directory">/boot</filename>.  If you do this, be sure to update
+    <filename>/etc/fstab</filename>.</para>
+
+    <para>Using the current lfs partition will also work, but configuration
+    for multiple systems is more difficult.</para>
+  </sect2>
+
+  <sect2>
+    <title>Setting Up the Configuration</title>
+
     <para>Using the above information, determine the appropriate
     designator for the root partition (or boot partition, if a separate
     one is used). For the following example, it is assumed that the root
     (or separate boot) partition is <filename
-    class="partition">hda4</filename>.</para>
+    class="partition">sda2</filename>.</para>
+
+    <para>Install the GRUB files into <filename
+    class="directory">/boot/grub</filename>:</para> 
+
+<screen role="nodump"><userinput>grub-install --grub-setup=/bin/true /dev/sda</userinput></screen>
+
+    <para>We use --grub-setup=/bin/true for now to prevent update the 
+    Master Boot Record (MBR).  In this way, we can test our installation 
+    before committing to a change that is hard to revert.</para>
+
+    <para>Generate <filename>/boot/grub/grub.cfg</filename>:</para>
+
+<screen role="nodump"><userinput>grub-mkconfig -o /boot/grub/grub.cfg</userinput></screen>
+
+    <para>Here <command>grub-mkconfig</command> uses the files in <filename
+    class="directory">/etc/grub.d/</filename> to determine the contents
+    of this file. The configuration file will look something like:</para>
+<screen><computeroutput>#
+# DO NOT EDIT THIS FILE
+#
+# It is automatically generated by /usr/sbin/grub-mkconfig using templates
+# from /etc/grub.d and settings from /etc/default/grub
+#
+
+### BEGIN /etc/grub.d/00_header ###
+set default=0
+set timeout=5
+### END /etc/grub.d/00_header ###
+
+### BEGIN /etc/grub.d/10_linux ###
+menuentry "GNU/Linux, Linux 2.6.30.2-lfs65" {
+        insmod ext2
+        set root=(hd0,2)
+        search --no-floppy --fs-uuid --set 915852a7-859e-45a6-9ff0-d3ebfdb5cea2
+        linux   /boot/vmlinux-&linux-version;-lfs-&version; root=/dev/sda2 ro
+}
+menuentry "GNU/Linux, Linux 2.6.30.2-lfs65 (recovery mode)" {
+        insmod ext2
+        set root=(hd0,2)
+        search --no-floppy --fs-uuid --set 915852a7-859e-45a6-9ff0-d3ebfdb5cea2
+        linux   /boot/vmlinux-&linux-version;-lfs-&version; root=/dev/sda2 ro single
+}
+menuentry "GNU/Linux, Linux 2.6.28-11-server" {
+        insmod ext2
+        set root=(hd0,2)
+        search --no-floppy --fs-uuid --set 6b4c0339-5501-4a85-8351-e398e5252be8
+        linux   /boot/vmlinuz-2.6.28-11-server root=UUID=6b4c0339-5501-4a85-8351-e398e5252be8 ro
+        initrd  /boot/initrd.img-2.6.28-11-server
+}
+menuentry "GNU/Linux, Linux 2.6.28-11-server (recovery mode)" {
+        insmod ext2
+        set root=(hd0,2)
+        search --no-floppy --fs-uuid --set 6b4c0339-5501-4a85-8351-e398e5252be8
+        linux   /boot/vmlinuz-2.6.28-11-server root=UUID=6b4c0339-5501-4a85-8351-e398e5252be8 ro single
+        initrd  /boot/initrd.img-2.6.28-11-server
+}
+### END /etc/grub.d/10_linux ###
+
+### BEGIN /etc/grub.d/30_os-prober ###
+### END /etc/grub.d/30_os-prober ###
+
+### BEGIN /etc/grub.d/40_custom ###
+# This file provides an easy way to add custom menu entries.  Simply type the
+# menu entries you want to add after this comment.  Be careful not to change
+# the 'exec tail' line above.
+### END /etc/grub.d/40_custom ###
+</computeroutput></screen>
+
+  <para>Note that even though there is a warning not to edit the file, you can
+  do so as long as you do not re-reun <command>grub-mkconfig</command>.  The
+  <emphasis>search</emphasis> lines are not meaningful for LFS systems as that
+  command needs an initrd image for processing. If installing on a separate
+  partition the linux and initrd lines will not have the /boot on the file
+  names.  In this example the kernel files for a Ubuntu installation are
+  also found in <filename class="directory">/boot</filename>.</para>
 
-    <para>Tell GRUB where to search for its
-    <filename>stage{1,2}</filename> files. The Tab key can be used
-    everywhere to make GRUB show the alternatives:</para>
-
-<screen><userinput>root (hd0,3)</userinput></screen>
+  </sect2>
+   
+  <sect2>
+     <title>Testing the Configuration</title>
+
+     <para>The core image of GRUB is also a Multiboot kernel, so if you already
+     have GRUB Legacy loaded you can load GRUB-&grub-version; through your old
+     boot loader.  To accomplish this, you will need to exit the
+     <command>chroot</command> environment and re-enter it to finish the
+     few remaining portions of the book.</para>
+
+<screen role="nodump"><userinput>/sbin/reboot
+...
+grub> root (hd0,1)
+grub> kernel /boot/grub/core.img
+grub> boot</userinput></screen>
+
+     <para>Note that the GRUB commands above are assumed to be GRUB Legacy.
+     At this point the GRUB prompt will appear (very similar to GRUB Legacy) and
+     you can explore the interface or boot to one of the systems in the grub.cfg 
+     file.</para>
+   
+   </sect2>
+
+  <sect2>
+     <title>Updating the Master Boot Record</title>
+
+     <para>If you tested the GRUB configuration as specified above, re-enter
+     the <command>chroot</command> envronment.</para>
 
     <warning>
       <para>The following command will overwrite the current boot loader. Do not
       run the command if this is not desired, for example, if using a third party
-      boot manager to manage the Master Boot Record (MBR). In this scenario, it
-      would make more sense to install GRUB into the <quote>boot sector</quote>
-      of the LFS partition. In this case, this next command would become
-      <userinput>setup (hd0,3)</userinput>.</para>
+      boot manager to manage the Master Boot Record (MBR).</para> 
     </warning>
 
-    <para>Tell GRUB to install itself into the MBR of
-    <filename class="partition">hda</filename>:</para>
-
-<screen><userinput>setup (hd0)</userinput></screen>
-
-    <para>If all went well, GRUB will have reported finding its files in
-    <filename class="directory">/boot/grub</filename>. That's all there is
-    to it. Quit the <command>grub</command> shell:</para>
-
-<screen><userinput>quit</userinput></screen>
-
-    <para>Create a <quote>menu list</quote> file defining GRUB's boot menu:</para>
+    <para>Update the MBR with:</para>
 
-<screen><userinput>cat &gt; /boot/grub/menu.lst &lt;&lt; "EOF"
-<literal># Begin /boot/grub/menu.lst
+<screen role="nodump"><userinput>grub-setup</userinput></screen>
 
-# By default boot the first menu entry.
-default 0
+    <para>This program uses the following defaults and are correct if you did not
+    deviate from the instructions above:</para>
 
-# Allow 30 seconds before booting the default.
-timeout 30
+    <itemizedlist>
+      <listitem><para>boot image  - boot.img  </para></listitem>
+      <listitem><para>core image  - core.img  </para></listitem>
+      <listitem><para>directory   - /boot/grub</para></listitem>
+      <listitem><para>device map  - device.map</para></listitem>
+      <listitem><para>root device - guessed   </para></listitem>
+    </itemizedlist>
 
-# Use prettier colors.
-color green/black light-green/black
-
-# The first entry is for LFS.
-title LFS &version;
-root (hd0,3)
-kernel /boot/lfskernel-&linux-version; root=/dev/hda4</literal>
-EOF</userinput></screen>
-
-    <para>Add an entry for the host distribution if desired. It might look
-    like this:</para>
-
-<screen><userinput>cat &gt;&gt; /boot/grub/menu.lst &lt;&lt; "EOF"
-<literal>title Red Hat
-root (hd0,2)
-kernel /boot/kernel-2.6.5 root=/dev/hda3
-initrd /boot/initrd-2.6.5</literal>
-EOF</userinput></screen>
-
-    <para>If dual-booting Windows, the following entry will allow
-    booting it:</para>
-
-<screen><userinput>cat &gt;&gt; /boot/grub/menu.lst &lt;&lt; "EOF"
-<literal>title Windows
-rootnoverify (hd0,0)
-chainloader +1</literal>
-EOF</userinput></screen>
-
-    <para>If <command>info grub</command> does not provide all necessary material,
-    additional information regarding GRUB is located on its website at:
-    <ulink url="http://www.gnu.org/software/grub/"/>.</para>
-
-    <para>The FHS stipulates that GRUB's <filename>menu.lst</filename> file should
-    be symlinked to <filename class="symlink">/etc/grub/menu.lst</filename>. To
-    satisfy this requirement, issue the following command:</para>
-
-<screen><userinput>mkdir -v /etc/grub
-ln -sv /boot/grub/menu.lst /etc/grub</userinput></screen>
-
-  </sect2>
-
-  <sect2 id="contents-gRUB" role="content">
-    <title>Contents of GRUB</title>
-
-    <segmentedlist>
-      <segtitle>Installed programs</segtitle>
-
-      <seglistitem>
-        <seg>grub, grub-install, grub-md5-crypt, grub-set-default,
-        grub-terminfo, and mbchk</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-bootable-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-bootable-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-bootable-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-bootable-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-bootable-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-bootable-grub mbchk">
-            <primary sortas="b-mbchk">mbchk</primary>
-          </indexterm>
-        </listitem>
-      </varlistentry>
-
-    </variablelist>
-
-  </sect2>
+   </sect2>
 
 </sect1>