Put a mesh strainer in your Instant Pot. Put the pound of noodles in the strainer and add 8 cups of water. Lock on your lid, set your toggle to sealing, and set manual/pressure cook for 4 minutes. When done cooking, do a VERY careful quick pressure release. You might have to do it in little bursts so as to not spray all over the kitchen, but you want the pasta out of the pot fairly quickly. Pull the strainer basket up, let it drain a few seconds, and then run the whole basket of pasta under cold water to stop the cooking. Set aside to cool.