this could be related to this bug: https://launchpad.net/ubuntu/+source /linux-source-2.6.20/+bug/84964
(we all use S-ATA drives and cannot boot) -- Feisty does not boot with second SATA disk attached https://launchpad.net/bugs/85483 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs