Comment 17 for bug 1893964

Same error (grub-install failing) when trying to install Ubuntu Mate onto bare metal. I have no ESP (and have no room to make one), but saw no warning about a missing ESP.

What's worse: the installation failed to boot: it hung while trying to mount something. Rebooting into another distro and examining the /etc/fstab on the Mate partition, it contained an entry for /boot/efi on /dev/sdb3 -- the installation medium! Surely this should never happen: any entries in /etc/fstab that refer to the installation medium should be removed before rebooting, also when any amount of errors occur during installation. After removing the line, I could then boot into Mate.