Things You'll Need
Instructions
Power down your Xbox 360 with your 60GB HDD still attached.
Remove any accessories attached to your Xbox 360.
Power on your console and one synced game controller.
Plug the hard drive transfer cable into your 120GB HDD.
Plug the other end of the hard drive transfer cable into one of the USB ports on the front or back of the Xbox 360.
Insert the hard drive transfer kit disc into your Xbox 360 disc player.
Follow all prompted onscreen instructions to complete the transfer from your 60GB HDD to your 120GB HDD.