Almost immediately after USB 3.0-equipped Macs were announced by Tim Cook at the 2012 Worldwide Developers Conference, MacNN started receiving tips that there were sporadic problems involving USB 3.0 external drives not mounting properly. The reports were scattershot, with reports of one drive working fine on one machine, but not on the Retina MacBook pro, or alternatively, working on the 2012 MacBook Pros but not the just-refreshed MacBook Air. To get to the bottom of the problem, we contacted an independent lab to set up tests of various combinations of new MacBooks and USB 3.0 drives to loo
