I wanted to start a thread to share my experience of upgrading the HDD inside my THR-22 from 500 GBytes to 2 TBs. I simply removed the old drive and replaced it with the Seagate 2TB Green dirve - which I bought at a local BestBuy for $160. Interestingly enough - the original drive was also manufactured by Seagate. It was a bit thinner, but it fit perfecly into the frame. The drive was automatically formatted as soon as I powered up the box, then the Tivo logo appeared with the sign.. Just a few more minutes.. And then it simply stalled. A couple red button re-boots did not help - the rebooting sequency simply failed for me. Then I tried the old CE trick (pressed 0-2-4-6-8 on the Peanut remote) - as soon as the first screen appeared after the reboot. That forced the software download (18A). As soon as the software was successfully updated - the Box rebooted again - this time all the way through to the guided setup. The entire experience was quite satisfying (in a geeky kind of way). The entire enterpise cost me $260 ($100 to DirecTV and $160 to BestBuy for the HDD). Let me know if anybody else was brave enough for this kind of upgrade?