I had a 2tb Western Digital EHD connected to my 622. Once the available drive capacity went below 450 gig, any show that it transferred to the drive did not show up on the list of recordings on the hard drive but the remaining memory lowered the same amount at the total for the transferred shows. It's like the shows are there but either they are corrupt or misplaced. I thought the receiver was the problem, so the receiver was replaced. After recreating all of the timers and losing more shows i was till having issues with the receiver. So last week, I was upgraded to a 722 by the tech that came out. Yesterday to tried to transfer some shows and guess what? Nothing again. I didn't think it was the drive because I can watch what is already recorded, I just can't add more. Is there any way to recover the lost recordings? I have another drive that I can use for backups but I don't want to lose anymore.