and i would like to know how to wipe the hard drive properly so i don't leave any info on it for the buyer to see. i tried to find a thread with this info to avoid making a new threat, but i didn't have any luck doing so. id like to make sure it would be like new for the buyer, and id also like to make sure he cant recover anything that i have deleted or had on my macbook. i have found how to erase the free space in disk utility but i'm not sure how to restore it to factory settings and all of that. any help would be greatly appreciated.