I have a Tivo HD that is stuck on the welcome powering up screen. Fan is still running so I assume the hard drive has failed. I have looked through some of the posts on here but they are quite dated. Is it still possible to replace the hard drive? Is the image still available? I'm not interested in recovering anything on the old one. Also do not need a big drive. 500GB would be fine. What is the cheapest I could get away with? Also, I have an old series 2 laying around. Could I use the hard drive from it with a new image instead of buying?