Check Here If Your Mac Is Eligible For a Mountain Lion Upgrade

With Mountain Lion reaching gold master status, it means Apple is nearly ready to ship OS X Mountain Lion to customers like you. But in order to use Mountain Lion, you have to have a certain type of Mac. Apple is cutting off older Macs from using Mountain Lion by making them ineligible for the upgrade. » 7/11/12 10:18am 7/11/12 10:18am