Kyle could you please do the following: boot with root=/dev/md0
check if the UUID used by grub is the same as the one in /dev/disks/by-uuid (the symlink should point to ../../md0) If it is not the same UUID, fix it in /boot/grub/menu.lst update the initramfs or make sure to have the latest mdamd installed (ubuntu3). reboot again. This fix did work for basically everybody reporting a similar issue, the only thing i can think of is an inconsistency on your system. Fabio -- Root on raid fails to boot https://launchpad.net/bugs/57607 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs