I'm the (un)fortunate owner of a PC which has a Gigabyte motherboard (GA-EX58-UD4P to be exact). I need to perform some tasks with the hard drives in both of my TiVos: 1. Series 2 (Toshiba RS-TX20), with a Seagate 750GB DB35 hard drive. It is showing symptoms of picture freezing, followed by rebooting. I'll check for bad caps, but I suspect the hard drive, since I can get it to freeze and reboot at the exact same spot in a recording. I was planning to use SeaTools to run diagnostics on the drive. 2. Series 4 Premiere, with the stock 500GB drive. I've purchased a 2TB WD20EURS drive to increase the recording capacity. The procedure looks pretty straight-forward using the jmfs tools. Before diving in to these tasks, I need to know what precautions to take due to the Gigabyte motherboard. I've done some reading about the HPA issue, but I think I need some specific instructions on how to prevent the possibility of messing up my TiVo hard drives. Thanks for any helpful information (or a pointer to the information).