When I tried to install the game Elder Scroll III: Oblivion on my computer I would get an I/O error (I forgot what the error was exactly) for my dvd drive. So I replaced my DVD drive and the game would install for a while longer than previously, then the same error would come up. Then I got this advice from someone that said if I copied all of the files on the disk and put them on my hard drive and install it from there it would work. I tried this and sure enough it did indeed work. But during installation I would occasionally get the error that there were missing texture files and such. (I was REALLY desperate to get the game running so I ignored all of the warnings). I beat the game, did all of the quests, went everywere, bought all of the houses, and the game worked just fine. I do ocassionally get problems like no facial animation when I'm talking to someone, but that's about it. Can anyone tell my why installing the game from my hard drive is any different from installing it from my DVD?