Can I safely upgrade directly -- in one install -- from Lion to Yosemite on an early 2012 iMac?
My Mac Mini Late 2012(Basic Model), i5, 16GB Ram, 500GB HD; I have decided not to upgrade to Yosemite until I purchase and connect a external SSD
Why?; read many articles regarding this subject, both Pro and Con, and my thoughts have leaned towards the Cons with a MM with only a Hard Drive.