Embed Configurations

This is for cross-linking other grub.cfg files into your booted grub.cfg file. This is useful for maintaining/modularizing independent grub.cfg files. There are 2 ways to do it:

• by prefix environment variable
• by configfile command (direct reading)

Set Prefix and Normal Command

The first method is to use the prefix environment variable. First you search the UUID using search.fs_uuid command. Then you set prefix variable and perform normal command to load.

insmod search_fs_uuid

search.fs_uuid <UUID> root

set prefix=($root)/boot/grub

normal

Configfile Command

Another way is to read the config file directly after setting the prefix variable. Then, we use configfile to read the configuration file directly. This is the more common implementation compared to normal command:

search.fs_label grub root

if [ -e /boot/grub/example/test1.cfg ]; then

        set prefix=($root)/boot/grub

        configfile /boot/grub/example/test1.cfg

else

        if [ -e /boot/grub/example/test2.cfg ]; then

                set prefix=($root)/boot/grub

                configfile /boot/grub/example/test2.cfg

        else

                echo "Could not find an example configuration file!"

        fi

fi

That's all about embedding multiple grub.cfg.