You can use your microwave to cook a lot of things, and crispy fried potatoes is no exception. Before you put the potatoes in the pan, your microwave is perfect for par-cooking the potatoes, so you don't have to over-fry the outside to a crisp just to cook the insides.
Image from homo_sapiens.
This tip is simple: Pop your cut potatoes into the microwave in an uncovered bowl for 2-3 minutes while you prep your pan for frying. This helps cook the inside a bit so that when you pan fry them, you won't risk burning the outsides while waiting for the centres to cook. Remove your potatoes from the microwave and pan fry them until they're perfectly crisp outside. You'll end up with potatoes that are crispy on the outside and soft and fluffy on the inside.
How to Make Really Good Fried Potatoes [Andrea Dekker]