OK I am very very new to mac...I have a 2TB USB Western Digital My Book Elite Drive that has about 1.5TB of data on it from a PC ... This is where I was stupid..I went into Time Machine to make a backup from my iMAC which has about 390GB used of a 1 TB HDD. When I selected the drive to use as the backup drive, my kid was talking to me and I wasn't paying attention...It began to "reformat" my drive?? Well I panked and disconnected the drive from the Mac...now when I reconnect it...It doesnt see anything but the WD partition... What possibilities do I ahve to repairing this and making it usable? I do ahve crazy important videos on there that I can't get again... Any help would be greatly appreciated.