yes, you can isolate BAD sectors as easy as running a scandisk. But i don't think that u're hdd has BAD sectors. One of your hdd's electronical component is busted.(might be the Xbios) this is a "chip" that controles the read/write heads. The sound that you hear comes from the r/w heads smashing from left to right inside the hdd. As far as i know there is no way in fixing this hdd. Enjoy