Comment 30 for bug 941874

>Can you try updating your initramfs and see if that helps?
>
>sudo update-initramfs -u
I did this and I still get dropped to the busybox, just after "begin running scripts/local-top...done" shows during boot.

From busybox, ls /dev shows these (disk but not the partitions):
/dev/dm-0
/dev/isw_dgjgchief_Volume0

cat /proc/kmsg shows at the end:
device-mapper:dm-raid45:initialized v0.2594b

>Also please make sure you are running the -ubuntu7 version of dmraid.
I'm not sure how to check this. As for the dmraid command, from busybox:
dmraid -V shows:
dmraid version: 1.0.0.rc16 (2009.09.16) shared
dmraid library version: 1.0.0.rc16 (2009.09.16) shared
device-mapper version: 4.22.0 (or perhaps 4.2.2.0)

Let me know if you need anything else.
Cheers!