A friend gave me a 40G Toshiba laptop hard drive he took out of a broken laptop he stripped.......I was going to use it as a USB backup external drive & put it in a usb case .......when I hooked it up to thew case I heard the usb link alert and can feel the hard drive moving BUT
It is not recognized when I look for it in my computer list of drives.....

do I need to format it if so how if I cant find it?

thanx in advance