my launch 360 has finally given up and bitten the dust. i've got another 360 - a slim - so it's not so bad. however, a friend has offered to give me his 360 that is suffering from the "open tray" error and i have a question. both machines are the fat model, mine is a non-hdmi, his has hdmi. can i just take the good drive from my now dead system and stick it in the other xbox? there's been no jiggery-pokery done with either machine, no flashing, etc, neither is banned from live. has anyone tried something similar, and, if so, what was the result?