I was given a Philips TiVo Series 1. The prior owner had installed a larger 160MB hard drive, but when I hooked it up, it would not complete the boot up process. He had given me two older smaller drives. I hooked up just one of the smaller drives (labeled A) and the device completed booting and set up and seemed to work fine. Only problem is that the older drive makes a loud whining noise. So here are my questions: Can I just go out and buy any new hard drive, or do I need to buy a specific kind (size or make)? Will the device will automatically format and set up the new hard drive once installed?