[[!comment format=mdwn username="gueux" avatar="http://cdn.libravatar.org/avatar/2982bac2c2cd94ab3860efb189deafc8" subject="comment 17" date="2018-01-05T17:57:40Z" content=""" As the config with Grub.EFI64 didn't boot, I'd like to be sure that Grub.MSDOS does not boot either. But GPT tables seem to need a BIOS Boot partition: creating /srv/router.img of size 1.67 gigabytes mkfs.fat 4.1 (2017-01-24) loop deleted : /dev/loop0 26,473,509 100% 206.69MB/s 0:00:00 (xfr#5, to-chk=0/7) 772,611,350 99% 60.26MB/s 0:00:12 (xfr#26272, to-chk=0/33603) update-initramfs: Generating /boot/initrd.img-4.9.0-5-amd64 Generating grub configuration file ... Found linux image: /boot/vmlinuz-4.9.0-5-amd64 Found initrd image: /boot/initrd.img-4.9.0-5-amd64 done Installing for i386-pc platform. grub-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible. grub-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged.. grub-install: error: will not proceed with blocklists. """]]