My 721's hard drive failed the other day after years of faithful service. 70 hours of programming down the drain, of course. I called Dish and found out I could get a refurbed 721 for $20 but with no way to know if it had a NEW hard drive or not. I chose to fix it myself and know that it would have a brand-new drive with a long potential lifespan (Seagate 160GB, 7200 RPM, 8MB cache, 5 year warranty, $50 after rebate at CC) I was able to connect the old and new drives to my PC and used Ghost 9.0 to copy all but the last partition from drive to drive. That was enough for the receiver to accept the drive and repair the installation. It is now up and running and seems to be working just fine.
Rob
Rob