My Sony Sat-T60 from 2001 is on its last legs. It is shuttering and lagging pretty bad and also occasionally restarts itself. Manual restarts and restores also do not seem to help. I am pretty sure it is the hard drive, unless someone else has an idea. At some point, I will break down and buy a HR2x to replace this unit, but I do still enjoy my little tivo workhorse. This is not a full time use unit. It is usually in the back bedroom and I use it mainly to pause live tv and listen to music. What would I need to do to replace the hard drive? I have plenty of old 40gb, 80gb, 120gb, 160gb IDE hard drives laying around that I know I can drop in. I know this unit has a hard drive limit size of 160gb. I am not too sure where to buy the software and what version. It is currently running software version 3.5d-01-1-001. Any recommendations would be greatly appreciated. Thanks for taking the time to read this post.