does some of those bug report are similar to this : https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/83313
We are many users to report serial ata not to work in feisty Please check if your S-ata drives are recognized -- Kernel 2.6.20-8 does not boot https://launchpad.net/bugs/84964 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs