Comment # 9 on bug 1205261 from Felix Miata

Summary of issue 2044:
/boot/efi added as a hard dependency in hostonly mode #2044

So far, I'm its only watcher. :(

(In reply to Antonio Feijoo from comment #8)
> If you add this option in your first boot after restoring the backup and
> then regenerate the initrd from the new running system, you should not need
> it anymore.

As you should not need root= anymore, right? :)