10.If the drive in question is a data drive or a Windows drive that appears as unformatted, you will have to use data recovery software, the best example of which is TestDisk, a free utility that will analyze your drive and recover your data. Get it at http://www.cgsecurity.org/wiki/TestDisk_Download and unzip and run the program.

11.Follow the instructions in the program or go to http://www.cgsecurity.org for more help.

12.Once TestDisk has made your drive accessible again, move it back to your own computer (if you had to move it in the first place) and enjoy your recovered files!