Just got a HR24-500 to replace a HR20-700 that went south. I had an external HD connected to the HR20. I realize I lose all my recorded stuff when I put the HD on a new DVR, but the external HD doesn't seem to be recognized. I went throuth the sequence as follows: disconnect power to DVR and HD, power up the HD, connect eSATA cable to HD and DVR, power up DVR. Then I recorded something, which shows up in the List. If I then unplug the eSATA cable the same List shows up. This indicastes to me that the external HD isn't being used. It worked fine on the previous setup (the HR20-700). Any advice? Anybody have an idea of what's goint on?