>From above comment https://ubuntuforums.org/showthread.php?t=2396042
Installed from latest Ubuntu Studio 18.04 ISO. Boots to grub> prompt Also fixed by copying /boot/efi/EFI/grub/grub.cfg to /boot/efi/EFI/ubuntu/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1775743 Title: [regression] Cosmic daily images 20180606-11 install but boot only to grub prompt on EFI systems To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1775743/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs