This guide describes how to replace the hard drive.
Unscrew the five 0.31 inch T-9 screws on the back cover.
Slide the cover towards the back until it is no longer under the front cover.
Lift the cover up and off the device.
Locate the hard drive.
Remove the ribbon cable by applying firm pressure to the black tabs on the sides.
Remove the power cable to the right of the ribbon cable.
Unscrew the 0.31 inch T-9 screws from the hard drive and pull outwards to remove.