This is my first Mac so bare with me. I am wanting to do a fresh install of mountain lion to completely erase any programs and traces the previous user may have left, that is format the existing Macintosh HD partition and do a new Mountain Lion install. I presume I am eligible to get the install file for free since this machine comes factory loaded with Mountain Lion anywhere right ? But when I log into the app store it's still showing as an item I have to pay for. What exactly is my copy of Mountain Lion tied to, is it the first account that was created on this machine and used to log into the app store or the product serial number ? Thanks..