Yes! That's it. I turned off in the BIOS the JMicron SATA/PATA controller and now it works. I cannot use my CD/DVD-ROM now but can boot.
-- 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