I have a 4gb xbox S, and today I bought the microsoft 250gb internal harddrive. I had read that it should allow me to play original xbox games, but when I try it gives me the message " The game couldn't start. Try downloading the game again." The game I am trying to play is Star Wars: Knights of the Old Republic, which is on the list of games that are compatable for the 360. I have tried cleaning the disk, re-starting the xbox, deleting memory cache, and un-installing the latest update and then allowing it to re-install. The disc itself has hardly any scratches. I have also tried another game that is compatable, and it also didn't work. Is there a problem with the brand new harddrive, or am I missing something?