Possible duplicate of bug #1901650 - as suggested, adding --no-nvram switch worked:
# grub-install --no-nvram Installing for x86_64-efi platform. Installation finished. No error reported Machine boots fine, however i do not know if it would have booted before running the command above. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1872212 Title: grub-install: Operation not permitted To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1872212/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
