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grub cfg: Add an explanation for the insmod commands

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Xi Ruoyao 2023-08-14 09:15:54 +08:00
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commit 93ec8b32bf
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chapter10/grub.xml
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@ -150,6 +150,24 @@ menuentry "GNU/Linux, Linux &linux-version;-lfs-&version;" {
}</literal>
EOF</userinput></screen>
<para>
The <command>insmod</command> commands load the
<application>GRUB</application> modules named
<filename>part_gpt</filename> and <filename>ext2</filename>.
Despite the naming, <filename>ext2</filename> actually supports
<systemitem class='filesystem'>ext2</systemitem>,
<systemitem class='filesystem'>ext3</systemitem>, and
<systemitem class='filesystem'>ext4</systemitem> filesystems.
The <command>grub-install</command> command has embedded some modules
into the main <application>GRUB</application> image (installed into
the MBR or the GRUB BIOS partition) to access the other modules
(in <filename class='directory'>/boot/grub/i386-pc</filename>) without
a chicken-or-egg issue, so with a typical configuration these two
modules are already embedded and those two <command>insmod</command>
commands will do nothing. But they do no harm anyway, and they may
be needed with some rare configurations.
</para>
<note><para>From <application>GRUB</application>'s perspective, the
kernel files are relative to the partition used. If you
used a separate /boot partition, remove /boot from the above