The error, specifically, is:
Installing for x86_64-efi platform. efibootmgr: option requires an argument -- 'd' ... grub-install: error: efibootmgr failed to register the boot entry: Operation not permitted. Failed: grub-install --target=x86_64-efi WARNING: Bootloader is not properly installed, system may not be bootable -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1765484 Title: grub-install should handle /boot/efi on RAID1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1765484/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
