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#### 5.4.2 GNU/Linux

It is relatively easy to boot GNU/Linux from GRUB, because it somewhat resembles to boot a Multiboot-compliant OS.

1. Set GRUB’s root device to the same drive as GNU/Linux’s. The command `search --set=root --file /vmlinuz` or similar may help you (see search).
2. Load the kernel using the command `linux` (see linux):

       grub> linux /vmlinuz root=/dev/sda1

   If you need to specify some kernel parameters, just append them to the command. For example, to set `acpi` to ‘`off`’, do this:

       grub> linux /vmlinuz root=/dev/sda1 acpi=off

   See the documentation in the Linux source tree for complete information on the available options.

   With `linux` GRUB uses 32-bit protocol. Some BIOS services like APM or EDD aren’t available with this protocol. In this case you need to use `linux16`

       grub> linux16 /vmlinuz root=/dev/sda1 acpi=off

3. If you use an initrd, execute the command `initrd` (see initrd) after `linux`:

       grub> initrd /initrd

   If you used `linux16` you need to use `initrd16`:

       grub> initrd16 /initrd

4. Finally, run the command `boot` (see boot).