If you hit F12 when booting, can you select a hard drive that won't be in UEFI mode? Some firmwares show two options, one for UEFI, and one for legacy for the same drive.
Or, can you disable UEFI mode and then boot to Windows again? ** Changed in: grub-installer (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1799692 Title: Grub isn't install edin Ubuntu 18.04, To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1799692/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs