a pI system will more than likely have a bios limitation that won't see a hard drive over 8 gig. adding an ata66, or ata100 ide controller card will allow for the bigger hdd's to be installed. not sure how the bios functions, when a controller card is installed. will the mb bios, then hand over functions to the controller bios, or does the mb bios become a problem?
edit: here's something that i got from a google search regarding lba, and large hdd support (for info, not arguement- i do believe i've learned something regarding chs, and lba) :