Par-boil whole potatoes for 8 to 10 minutes. Cool and peel. OR peel whole potatoes first, then par-boil after slicing. Par-boil slices for 3 to 6 minutes.
Slice potatoes into 1/4" or 1/8" slices, cut into 1/4" cubes, slice into French fries, or shred for hash browns.
Put potatoes on lined dehydrator trays in a single layer, with slices not touching.
Put the trays in the dehydrator and set the temperature to 145°F.
After 2 hours, turn it down to 125°F.
Dehydrate for 6 to 10 hours. Drying time depends on thickness of the slices and humidity.
Turn sliced once during drying.
When the pieces are completely dry, let them cool before you put them in a storage container.
How to rehydrate dried potatoes
I use the boiling water method to rehydrate most of the things I use. The basic formula is 1 cup boiling water (or other liquid) to 1 cup dried food. OR add to soups or stews with a little added liquid.