Aha, got it: the efidisk module is working but the FAT file system support isn't quite right, so it's just the EFI System Partition that GRUB has trouble reading. The missing commit is this one, which is in 2.00 thus explaining why this works in more recent releases:
http://git.savannah.gnu.org/gitweb/?p=grub.git;a=commitdiff;h=daa59f47f6818d2a2c90526be5b2b38a11770dc1 Doing a full boot loader test is awkward due to the involvement of a signed image, but I've confirmed the bug with grub-fstest and grub- mount, and built versions of those tools with that patch which can successfully read all the files under /EFI/ubuntu/. I'll prepare a backport. ** Changed in: grub2 (Ubuntu Precise) Status: Fix Committed => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1065281 Title: Installer crashed when trying to partition 4k/4k sector hard disks To manage notifications about this bug go to: https://bugs.launchpad.net/dell-poweredge/+bug/1065281/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
