So I have a raid 0 that has been corrupting all over the place. I've taken all I want off of it, and pulled the drives out of the machine. I'm now reformatting my drives on another machine. I'm wondering how I tell which was the bad hard drive. I'm assuming that one of the drives is the problem instead of the controlling card. Perhaps foolishly. Anyway, are there some good utilities for free download or perhaps within windows to tell me if a drive is good or not?