Remove a hard drive from 2014/2015 Sky box

This post describes how to remove the hard drive from a new Sky+ HD box (2014/2015). It turned out to be trickier than I expected and I couldn't find much on the Internet to help so thought I'd write a quick post. Firstly, you need to remove the two grey plastic panels on the sides.  This is done by removing the two screws on the far left and right at the back.  Once these screws are removed, if you look under the box, you can see a piece of black plastic that can be lifted and a triangle shaped gap:  So, whilst lifting the black plastic with your finger, put a flathead screwdriver into the triangle shaped gap and lever the grey plastic backwards so it slides out. Next, you need to remove the black plastic casing.  To do this, remove the two screws in the deep black holes on the bottom of the box (near the piece of black plastic that can be lifted).  Once these are out, locate another piece of black plastic that can be lifted on the botto...