Hello All, I have a standard Directv DVR I think it's the H24. 3 years ago I bought a Weaknees external HD with RAID (2 WD 2TB drives.) So the fan died (for the 2nd time) and while I had it open I decided to replace one of the drives. I had an extra WD Drive that I ordered last time I replaced the fan. I did this because sometimes it really got slow and reading some of the forums folks mentioned that as the HD ages it can sometimes get some bad sectors and cause this problem. I was just trying to see if that might be the issue. In all other ways everything worked great. So I put in the new fan, power it up, all is fine. So I powered it down, pulled the top drive, but in the new drive and powered it up. I got a few seconds of flashing lights and then nothing. I waited thinking the system was probably detecting the drive change and at some point would start copying over to the new drive. I waited 15 minutes and it never did. I can hear both drive running and there is the initial flashing of the LEDS and the power LED is lit. So I know it has power and some functionality. At this point I thought maybe the "new" hard drive might have a problem. (it was brand new in the pkg.) So I pulled it, put the original drive back it and it does the same thing! If I boot the DVR it boots to the internal drive, not the external drive. Weaknees just wants me to send the thing in so they can charge me boo koo bucks to "fix" it. Reading these forums there seems to be lots of people with estata drives in enclosures and other than having to wait for the system to boot on the new drive, it works fine. Does anyone have a clue as to why putting back the original drive with all the same data did not come back up? Thanks so much for any help you can give.