So I am upgrading to the Hopper tomorrow. I am going to save some shows I have on my 922 to an external hard drive. The drive I am using is from my 211 that was used to turn that receiver into a dvr. I thought I could just plug it into the 922 and it would ask me if I want to format it, but nothing happens. Since it was formatted for the 211, do I have to reformat it on a computer somehow, before I can plug it into the 922? And by the way...anything I save on the external drive from 922 will work on Hopper right?