How to upgrade to Mac OS X Lion
Leave it to Apple to turn the time consuming process of upgrading an operating system into a simple update through the App Store. This morning, I upgraded my second generation MacBook Air (with Intel Core 2 Duo processor, 4GB of RAM and flash storage) from Snow Leopard to Lion and it couldn't have been easier. Let me take you through the process.
Apple's OS X Yosemite now powers about one in five Macs, an uptake rate that surpassed last year's Mavericks in first-month adoption speed.
Apple on Wednesday released OS X 10.9.5, what is most likely the last non-security update for Mavericks
Apple today launched OS X 10.10, aka Yosemite, as a free upgrade for most Mac owners.