A Removable Storage system provides two classes of media pools: system and application. System media pools include free media pools, unrecognized media pools, and import media pools. Removable Storage creates one free, one unrecognized, and one import media pool for each media type in your Removable Storage system.
Also avoid snacks with a lot of salt as salt makes you thirsty. Good alternatives to trail mix are crackers, potato sticks, grapes or raisins. Plan on having something to snack on every couple of hours on a long day hike to keep your energy level up.
If you hike often, a canister can be a worthwhile purchase. They can also often be rented on popular hiking routes if you don't want to buy your own. Place all food into the canister and close completely. Locate your sleeping area away from your cooking and bear canister area, ideally at least 100 yards.