At least internal disk not rejecting if you put it in USB2 enclosure and connect to 622. Just telling the feature not suppot yet.
It was posted - the 622's disk have 4 EXT3 ( Linux) partitions. I saw that from posted internal logs.
Hmmm...
My guess:
OS (Root etc), Swap, DVR (Customer), DVR Reserved (Dish)
Cheers,