Regression after upgrade disco -> eoan, booted from btrfs disks. Worked normally before upgrade, cannot install grub after upgrade. Ended up with non-bootable system, had to plug an old disk exclusively to put /boot there.
Regression after upgrade disco -> eoan, booted from btrfs disks. Worked normally before upgrade, cannot install grub after upgrade. Ended up with non-bootable system, had to plug an old disk exclusively to put /boot there.