OK, I've worked around the problem. First, I can confirm what vygotski reported: it only happens if you are installing to a blank SSD. I created my ESP (FAT32) partition first and made it larger (300 MB) and the rest of my custom install worked after that. Not a huge problem but it would be nice if it was at least documented somewhere.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1418706 Title: UEFI: blank drive incorrectly detected as existing BIOS-mode install To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/partman-auto/+bug/1418706/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
