I'm pretty sure this was related to initramfs-tools not including the new pata drivers. This has been fixed in newer initramfs-tools packages.
If this does not fix your problem, then you have an issue with your grub menu.lst file. Edit it, finding the line that has kopt_2_6, and delete that line, then run "sudo update-initramfs -u". ** Changed in: linux-meta (Ubuntu) Sourcepackagename: linux-meta => linux-source-2.6.19 Status: Confirmed => Fix Released -- kernel 2.6.19-6 does not boot https://launchpad.net/bugs/73057 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs