On 2020-08-03 18:43, Gordon Messmer wrote: > On 8/3/20 2:21 AM, Jyrki Tikka wrote: >> The boot disks must have an EFI boot partition even though it's not >> used in this case. > > > IIRC, they need a partition at the beginning of the drive to reserve > space for GRUB2. That should be a "BIOS boot partition" not an "EFI > System partition" for GRUB2. It's not used for a filesystem, but it > is used to store GRUB2's second stage image. Yes, you are absolutely right. I'm away from home right now and I don't have access to my home systems. My memory failed me which is not unusual. <(*) Jyrki