I just tested this with Ubuntu 16.04 (amd64) server installation media. GRUB was written succesfully, so this problem has been introduced after 16.04.
** Changed in: grub-installer (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1690767 Title: GRUB installation fails on DFI industrial PC To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1690767/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs