It would take at least 40-45 minutes to an hour to bake a large potato at 450 degrees. I often cut down the baking time to maybe 30 minutes by cutting the potato in half the long way before baking....
It depends. If you put one in a microwave, it can be done in 7 to 10 minutes. If you dice them and boil them, they can be done in 10 to 20 minutes. If you wrap them in foil (or not) and place them in...