Comment 21 for bug 1671605

Marking curtin task invalid at this time.

grub requires at least one partition to determine the MBR gap, or a bios_boot partition for GPT (UEFI systems use /boot/efi partition to hold grub data); Grub upstream does not support using blocklists as any updates to the filesystem may leave the system unbootable again. curtin is doing as-told; please re-open if you find new information indicating that curtin need to do something different.