When i try to open my usb harddrive, windows says that it cannot access it because it's corrupted. this happened since i restarted the machine after a hangup. so i formatted 1 partition where theres not much important data and now i can open that partition. but i cannot access the other one, where all my valuble data resides. when i open "My Computer" , it displays all the partitions with their Total size and Free space info, but the one thats corrupted dosent show thoes info. anyone know a way to retrieve the data inside the corrupted usb partition? any tool or something to get back data? please help!

thanx for any help.