I agree, the only hard drive issue I have ever had on my Tivo's was the ESATA external drive on my S3. It worked for about and month and then went wonky. I had to disconnect the external drive and of course I ended up loosing all my data, but the base TiVo came right back up. I then pulled the 1TB drive out of the ESATA case and placed it into my Media server and it has been banging away for years. I will never do that again. Too many points of failure, and if you do have a problem - you will loose everything on both drives.