You apparently are running an EFI system, and have a GPT partitioned disk, but have no efi system partition. To boot it in efi mode, you need to have an efi system partition. To boot it in bios mode, you need to have a bios_grub partition, though it seems that wouldn't help in your case since grub-install failed to fall back from grub-efi to grub- pc.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1326143 Title: fatal error installing grub to USB HDD when installing system to USB HDD To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1326143/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
