The stock harddrive is an 80 gig SATA and it just wasn't big enough for my needs. Ok, actually it was fine... I just like taking things apart and tweaking them! The specs claim you can record up to 60 hours of Standard Definition programming. However, I maxed the harddrive and was only able to hit about 42 hours of record time. The shows were a pretty even mix of 30min, 60min and 120min recordings.
Step 1: Items You'll Need.
-A rotary tool (Dremel tm) with a grinder bit
-3 PC harddrive mounting screws (optional)
-A bigger SATA style harddrive (approx 160 gig recommended)
A quick note about the harddrive: I have read that you should only put 160 gigs worth of drive space in this box because it can only use that much - anything bigger is a waist of money and unused drive space. However, I bought a 250 gig drive because it was cheaper than smaller drives I was looking at and it works fine. At 99% full my new drive is holding 100 hours of recordings. Remember that that the original 80 gig could only hold 42 hours. The drive is 3 times bigger but is obviously not able to hold 3 times the amount of recordings. So the 160 gig rule seems to hold true.
Step 2: Open Your Digital Box
Stop here if you are concerned about this!
POWER THE UNIT OFF THEN UNPLUG THE POWER CORD FROM THE BACK OF THE BOX!
Opening the PVR is relatively easy to do as there are only 3 security screws and 1 anti-tamper plastic tab (looks sort of like an arrow head). Lucky for us we have anti-anti-tamper tools! What I originally did was grind off the screw heads with the rotary tool. In retrospect, I should have just ground a straight line across the screw heads so I could extract them with a flathead screw driver. Either way works but the second way, you don't fiddle around trying to get the screw stumps out before you can put it back together with new screws. Next grind off the plastic anti-tamper tab or cut it with a utility knife.
The top should slide back then pop up and off after this step is complete.
Step 3: The Guts!
Next remove the 4 mounting screws from the harddrive mounting bracket. They are circled in red in the second photo.
After removing the harddrive and bracket from the circuit board, flip over the bracket and remove the 4 retaining screws that attach the harddrive to the bracket.
Pop in yer new drive and reverse these last steps. By the way don't forget to re-attach the cables to the drive when re-assembling. It might sound obvious, but guess who (in his excitement) forgot to do this and couldn't figure out why he couldn't record anything!?!
Also this is where you can use the 3 PC screws to re-attach the box cover if you mangled the original security screws.
Step 4: Great Success!
If for some reason it doesn't load up, it is most likely having trouble getting going with the firmware. Call your cable provider and ask them to "refresh" your box. Failing that they can "hit" the box to try to push it back online.
Finally if that doesn't work, you can manually reset the box by holding down a combination of the buttons on the front of it. This wipes the firmware completely and re-downloads it from your provider. I won't get into that here, your provider can explain this to you.
Let me know what you think!