I had an old hdd in my xbox with all of my games backed up on it and wanted to upgrade to another drive. I used FTP with my PC as the middle man and copied all of the game folders off of the old hard disk and onto my new one. Unfortunately only about 50% of my games now work. Some load fine while others give me the 'dirty disc' error. Still others don't load anything at all. I really don't want to copy all of these games (30+) from their original discs again, but i would also like to use this new hard disk - any tips>?