I have recently bought/leased a second HR20 receiver. The first one is almost always teetering on being full, so I thought I when I acquired one for another room that I would also buy an external hard drive. I turned on the new receiver, waited for it to download the latest build and called Directv to activate it. Then I recorded a very small length of show. Then I turned it off and unplugged it. Next I connected a new FreeAgent 750GB via a 6' long shielded eSata cable that I bought at Fry's. Then I turned on the drive, waited, turned on the HR20 and waited. Then I saw the same show. So everything was turned off and then everything was turned on and nothing. Cool that is what I was hoping for. Anyway, when I record or play something I can hear what I presume to be drive clicking from the HR20 and not the external FreeAgent drive which seems to spin sometimes and other times not (cool to the touch / no vibration / no sound). Additionally, I am not not certain that there really is an increase in capacity (2 hours (total) of HD from SHOH and DSHD = CORRECTED 95% EMPTY). If anybody has some suggestions I would appreciated it.