It was a long time ago that I used grub-btrfs so I don’t quite remember how it handles setting up the Grub boot menu. If it uses the /etc/default/grub so have a look at this thread:
It was a long time ago that I used grub-btrfs so I don’t quite remember how it handles setting up the Grub boot menu. If it uses the /etc/default/grub so have a look at this thread: