3. IMPORTANT Now turn your Tivo Upside down before you start to drill this way when drilling any swarf (bits of metal) should fall away from your Tivo not into it. With the Tivo UPSIDE DOWN you can now start to drill, I started with a 3mm then went 5mm, 7mm, 9mm then 10mm Drill.
Before turning you Tivo back over check for any bits of metal that may be stuck on the lip inside the rear of the panel.
TIP: Start the drill slowly until the drill bit beds itself into the metal and take your time when drilling don't rush it.
CHECK THOROUGHLY FOR FRAGMENTS OF METAL AFTER DRILLING AS TIVO WONT LIKE THEM