Things You'll Need
Instructions
Connect the external hard drive to your computer using its USB cable.
Click on the "Start" button and select the "Run" option from the list. Type "CMD" in the text box and press "Enter" or click the "OK" button.
Type "format (drive letter): /FS:FAT32" into the command window but replace (drive letter) with the letter that represents your external hard drive. If you are unsure of what it is, go to "My Computer" and find your external hard drive; the letter will be under the icon for the drive. Press "Enter" and Windows will format your hard drive into FAT32.
Disconnect the hard drive from your computer and connect it to your PS3.