Ensure Boot from Hard Disk is selected in grub, migration
Migration from 12SP5 fails because the entry
Boot from Hard Disk is not selected in grub menu of the migrated system.
Boot from Hard Disk is selected in grub menu
It seems that the input that selects the entry is not registered, but also that the grub timeout is too big compared to the needle timeout. Maybe it is worth investigating if this is unexpected behavior/bug