I've hit this problem too in the latest Feisty release (5). I have three drives which are labelled by Linux and grub in the following manner:
Drive type Linux grub SATA-1 /dev/sda ?? SATA-2 /dev/sdb /dev/sda (this is my boot disk) SATA-2 /dev/sdc ?? The BIOS lists them in with the first SATA-2 drive first. I don't believe I have any control over ordering the SATA drives in the BIOS. I don't actually know what devices grub assigns to the other drives. -- grub guessed BIOS disk order incorrectly https://launchpad.net/bugs/8497 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs