Incidentally, there's no point ever preseeding grub-pc/install_devices_empty to false - it will be ignored, and if there weren't special-case code to ignore it it would cause an infinite loop instead. If idevs_empty is False, you should just not preseed grub-pc/install_devices_empty at all.
Incidentally, there's no point ever preseeding grub-pc/ install_ devices_ empty to false - it will be ignored, and if there weren't special-case code to ignore it it would cause an infinite loop instead. If idevs_empty is False, you should just not preseed grub-pc/ install_ devices_ empty at all.