Comment 8 for bug 880766

Updating bug description - I'm having the same problem in a VirtualBox environment (disks partitioned as GPT, no EFI).

I was able to use ubuntu-11.10-server-amd64 to install a system with mdadm RAID1 (GPT partitioning, 1MB "BIOS GRUB" partition, ~20GB RAID) and have the system boot successfully, but trying to install ubuntu-11.10-desktop-amd64 with the same partitoning failed.

chrooting in and running grub-install again gave 'grub-probe: error: no such disk' as above.