You had an oblivion account on xbox 360 far in the story you changed your hardrive and you have to start all over if you change back to your old hadrive will it still have all your old memory?

Answer 1

Assuming that you had not deleted your save game from your old hard drive then the answer is, yes, you would still have your old game. If you wanted to save your info from the old hd to the new, the easiest way would be to save the game onto a memory card and then onto the other hard drive.