Yep, I ended up using the "use entire disk" option. But the "install over ubuntu 16.04" option shouldn't really be available, since there's no way it can result in a booting system in this case.
(The warning message also said "Debian" rather than "Ubuntu") -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1613052 Title: Failed to install grub in UEFI mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1613052/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
