That is a 211 vs. the 222 being discussed in this thread. It is possible on a 211 (single tuner receiver) and not the 222 dual tuner receiver.
Yes, I know. I was just giving my experience of plugging in an EHD to a receiver that hadn't been activated for an EHD. The point being, it saw the drive and prompted me to call Dish. I figured the 222 might react the same way IF the software now supported an EHD and it would pop up the same message when an EHD was attached but not activated for one. Makes sense, doesn't it?