Can I partition and run Mountain Lion (10.8.5) and Yosemite on the same Macbook Pro with Retina?
Need to run an older version on Quark on a weekly basis so need to maintain OS X 10.8.5... want to be able to run Yosemite for newer software. Short of buying another computer, what are my options?
MacBook Pro with Retina display, OS X Mountain Lion (10.8.5)