Xbox 360 CD Removal Without Restart?

Q: Is it possible to remove a Xbox 360 game, without restarting the console? My Assassin's Creed won't work, apparently, it's too dusty,scratched, etc.. Well, can I take it out and wipe it off, without restarting the system? I don't have a HDD, sooo, I don't wanna have to redo everything. Yes, I'm going to leave my Xbox on for 24 hours, 7 days a week, cause it takes me just that long. It's not a matter of beating it. It's a matter of simply playing for more than 30 minutes w/o having to redo everything. Anyway, can someone just answer the question?

A: get hdd

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