The error comes from the impossibility for "efibootmgr" to create a new boot UEFI entry # efibootmgr --disk /dev/sda --part 1 --create --label "ubuntu" --loader "\EFI\ubuntu\shmix64.efi" Could not prepare Boot variable: Invalid argument
** Package changed: grub2-signed (Ubuntu) => efibootmgr (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855574 Title: grub-efi-amd64-signed (1.93.15+2.02-2ubuntu8.14) failed to upgrade, system unbootable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/efibootmgr/+bug/1855574/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
