Error out of disk, entering rescue mode. Grub rescue

Hi,

So is this telling me that my disk is out of space, yesterday I upgraded to OMV 1.0 ( Upgrade from latest OMV 0.5.X to OMV 1.0 thread ) I had trouble seeing the GUI. I followed davidh2k to fix and it worked. I tried to turn on and run machine this AM and got the message:
Error out of disk
entering rescue mode
Grub rescue>_

Any thoughts? Can I put OMV on a new (different disk) and still have it work with my 3 Disk Array and have all files intact?

Thanks,

Drew

Thanks guys for both answers. ryecoaaron once again you are a lifesaver. followed instructions and I am now logged in.
KM0201 I think I will put the new 1.x on another drive and keep as a backup for the next time I Blow it up.

Drew