I think the bug is still present in 13.04 as well as in 13.10 beta. I manged to get things working, and found the source of the problem: the search.fs_uuid set in EFI/ubuntu/grub.cfg on the UEFI system partition is not correct, as it does not relate to the root fs.
So I had to boot from a rescue disk, open a shell on my target root filesystem, get its UUID with bkid, mount /boot/efi and edit grub.gcf with the right UUID. After that, things worked. I also used dd to clone the ESP on the second disk of the raid to be able to boot in case one of them fails... So I think the bug is when picking the UUID of the root fs when generating the /boot/efi/EFI/ubuntu/grub.cfg file. ** Summary changed: - grub-efi-amd64 does not allow system to boot on HP 8200 Ellite CMT + grub-efi-amd64 picks wrong UUID for root fs when using RAID and LVM -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/842838 Title: grub-efi-amd64 picks wrong UUID for root fs when using RAID and LVM To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/842838/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
