Admittedly, it's been a long time since I've gone looking for that info - and, as I think about it now, it would have been after installing a bigger hard drive in my DSR7000 "DirecTivo" that I used before switching over to the HR's about five years ago. I probably knew at the time that I was giving that up and forgot since then. Semi-related - I know the HR's show a % free down in the bottom corner when looking at the LIST. While playing around, I realized there's a little upside triangle next to the value. Typically, that indicates some kind of drop down list or menu available. Yet, I haven't found a way to reach it by navigating with the remote. Is that triangle some kind of menu, or is it trying to tell me something else?