So I have an external hard drive that I've plugged into a Windows 7 OS with a SATA/IDE Converter. In both Windows Explorer and Disk Management, I can see two drives appear, one called Recovery which is just recovery files but the large space is called OS and there is a letter assigned to it. I have tried numerous recovery software but they don't show up in it and when I click on the drives, just freezes the system. Can't read. Close but yet so far. Anything else I can try here to recover data on this corrupted hard drive?