Advertisements I had asked this question before, but my wording was not clear, so there were no answers. I'll try again: I'd like to install a larger hard drive in my TiVo ModelTCD540040 Series 2 DVR. I prefer NOT overbuying a super duper (overkill) hard drive that might not even be compatible with the existing DVR system, e.g., is the factory HD ATA33, ATA166, (dare I say SATA)?. What drive would be right? Of course, I'd get the software that allows preparing the new drive for installation in the DVR.