The bios_grub partition is not automatically created simply by virtue of leaving some blank space. If you're using manual partitioning, you do need to set it up by hand.
That said, it's still a bug that GRUB is failing hard in this case, just a less serious one. ** Changed in: ubiquity (Ubuntu) Importance: Undecided => Medium ** Changed in: ubiquity (Ubuntu) Assignee: (unassigned) => Colin Watson (cjwatson) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/855871 Title: Grub install fails after manual xfs partitioning To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/855871/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs