Instructions
Remove the original Xbox 360 hard drive by pressing down on its tab, then lifting it out of the console.
Place the new hard drive over the console with the narrow end pointing toward the front of the console and the wide end facing towards the back.
Insert the hard drive into the console so that the ridge on the back of the hard drive slips beneath the lip of the hard drive bay.
Push the front of the hard drive down gently until it clicks, indicating that it is locked in place.