Public bug reported: There is a bug in GRUB where it will not write the boot loader to the disk. It simply says "Fatal Error" and then exits. Further attempts will result in the same error message.
To fix this error, I can take the drive out and put it into a windows machine, switch it to Dynamic Disk, then format it. When I place it back into the original computer, GRUB will install without any problem. I hope that will provide a clue to someone more knowledgeable as to what the real problem is. To reproduce this problem. Get a computer with UEFI boot. In my case it was a Dell PowerEdge R410. Install OPNsense firewall on it: https://opnsense.org/ Next, install Ubuntu 18.04 and you will get the GRUB error. It's a fatal error and you cannot continue! ** Affects: grub-installer (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1776383 Title: GRUB error unable to install boot loader To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1776383/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
