hey friends So I Have An Appoitment At apple genius bar For My Ipod as it is not working frome last few days so they Are Probably Going to Just Switch Out My Ipod Or Send It To Repair So I Will Probably Loose All My Data. Can you guys tell that how can I Restore My Ipod And Leave It Completely Empty Or Leave It With All My Data? I really need your help don’t wanna loose my data at all.