Question 1. why oh why does my PS2 slim play 90 % of my games and then decide not to play my Favorites 3 games, that I have been playing for the last six months perfectly fine. I cleaned it (console) the disc is not scratched on bent, broken etc. My other games boot and play fine.

Ques, #2 . Can someone tell me where I can get some info on adding a Harddrive to the ps2 slim model and their experience with that.