Does your Jtag not detect your external hard drive? Do you not know how to format your drive to FAT32? Well I will teach you a quick and easy way how to solve this problem.
What You Need:
http://www.ridgecrop.demon.co.uk/guiformat.exe
What To Do:
Step 1:
Open Up GUI Format (Run as Admin if on Vista/7)
Step 2:
Under Drive, Make sure you select where YOUR EXTERNAL HARD DRIVE IS!
Step 3:
DONT TOUCH ANYTHING ELSE
Step 4:
Click Start
Step 5:
Wait until it says, Done
Step 6:
Now you can close and it will work :D
Credit Goes to Mets08123