Originally Posted by mcf57
I may have a similar issue. I have a series 3 (TCD652160) that seems to dump out in the middle of a service connection and never fully completes. I pulled it and connected it to another PC. Then ran a WD lifeguard diagnostic extended test on it. It did say that some sectors needed to be repaired. I chose to repair them & it said it was successful doing this, but is this a sign the drive is going? Or does this mean maybe the software is corrupted?
Yes, it's time to replace that drive.
I suggest a WD20EURS or the newer version, the WD20EURX.
Those sectors weren't caused by the TiVo software on the drive, they represent a failure of the drive itself (or more accurately a failure of areas on the platters). Every drive has "extra" sectors known only to the drive itself, and the addresses of those bad sectors have now been remapped to some of those spare sectors, and it did the best it could to write to the new ones the data on the old ones.
But just because the TiVo software can't make the drive go bad doesn't mean that a drive going bad can't scramble the TiVo software.
Now that those sectors have been remapped, the drive may last for years. Or more sectors might start going bad tomorrow.
You'll find out which the hard way.
Replace the drive.
Run the drive maker's own diagnostic long test on the new drive before putting it into service, 'cause sometimes stuff happens, especially during shipping.
And while you've got the TiVo opened up anyway it would be a good time to check the power supply.
Actually it would be a good time to go ahead and replace the capacitors on it which are the usual suspects and save yourself having to do it later, since it's almost certainly a case of when and not if.