Advertisements What is the largest hard drive that can be put in the Pioneer 810h? I went from a 80GB then to a 250Gb and now a 320GB. Has anyone ever tried a 500GB or 750GB? 1TB? 320GB hard drive hours you get on Tivo: Fine: 72 hours High: 138 hours Medium: 281 hours Basic EP: 422 hours I've been using InstantCake to prepare the drives and it works great!