As long as you mount it in /boot/efi ( or was it /boot/grub/efi? ) it doesn't matter; grub-efi ignores the installation target.
-- 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 ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
