Things You'll Need
Instructions
Plug the hard drive in the USB port on the front of your Xbox 360. Turn the Xbox 360 on.
Insert your game disk into the Xbox 360.
Go to your game library from the my Xbox tab. Select the game you want to save to your hard drive. Click "Install Game." If this is the first time the USB hard drive has been used with the Xbox, you will be prompted to configure the hard drive for the Xbox 360. Click "Yes" to configure.
Select "USB Storage Device" from the list of available storage devices. Click "Configure Now." Click "Yes," and the Xbox will configure your device. Click "OK" once the Xbox finishes configuring your device.
Go to your game library again. Select "Install Game." The Xbox prompts you to choose which storage device you want to save the game on. Choose your external hard drive. The game will download to the hard drive. The next time you play the game it will load from the hard drive, giving you a faster game-playing experience.