Adding '--no-nvram' as advised by Robert in #5 seems to work. Without:
| ubuntu@machine-0:~$ sudo /usr/lib/grub/grub-multi-install --target=x86_64-efi | Installing grub to /boot/efi. | Installing for x86_64-efi platform. | grub-install: warning: Internal error. | grub-install: error: failed to register the EFI boot entry: Operation not permitted. | Installing grub to /boot/efi. | Installing for x86_64-efi platform. | ^C | ubuntu@machine-0:~$ With: | ubuntu@machine-0:~$ sudo /usr/lib/grub/grub-multi-install --target=x86_64-efi --no-nvram | Installing grub to /boot/efi. | Installing for x86_64-efi platform. | Installation finished. No error reported. | ubuntu@machine-0:~$ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1901650 Title: grub-install: error: failed to register the EFI boot entry: Operation not permitted. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1901650/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
