Tips and tricks

This page aims to collect some tips and tricks for users and developers.

Installing onto a secondary disk

While developing, you might want to perform the installation on your secondary disk. To check that everything worked as expected, you would like to move the disk to a different VM. However, most probably, the system will not boot. This comment on issue #416 describes the steps to boot the system in that disk.

From the grub prompt:

grub2 rescue> set root=(hd0,gpt2)
grub2 rescue> set prefix=(hd0,gpt2)/@/boot/grub2
grub2 rescue> insmod normal
grub2 rescue> normal
grub2> insmod btrfs
grub2> linux /@/.snapshots/1/snapshot/boot/vmlinuz root=/dev/sda2
grub2> initrd /@/.snapshots/1/snapshot/boot/initrd
grub2> boot

To make it permanent run as root:

# grub2-install /dev/sda
# grub2-mkconfig -o /boot/grub2/grub.cfg