Hey guys. I have a late 2008 Aluminum Macbook. Upgraded to 8gb of RAM, and of course, OS Lion. Now Ive tired to look all over and cant find a real answer. Can I, and How do I, wipe my entire HD and keep Lion? I know I will get more money with lion, not Snow Leopard. Since I've already done it, I dont want the buyer to spend another $29. If anyone was wondering, Im going to be buying a 13 inch air. Thanks!