OS X changed the game for Apple. Image: Killian Bell/Cult of Mac OS X, the most important piece of software in Apple history, turns 20 today. Going on sale in its full, public version on March 24, ...

Apple has officially ceased the sale of OS X Lion 10.7 and Mountain Lion 10.8 from its online store. The change was spotted by @ClassicII_MrMac on X, formerly Twitter. The original release of OS X ...

The first official public version of Mac OS X launched by Apple on March 24, 2001 wasn't a success at first, but it powered the Mac through the next 19 years until macOS Big Sur came out with Apple ...

Apple’s macOS operating system has changed a lot over the last 25 years, with new features and designs coming and going as the decades have passed. Even the name has been adjusted, starting out as Mac ...

June 8, 2009: Apple introduces OS X Snow Leopard, a version of its Mac operating system that ranks among the company’s finest desktop updates. Showcased at Apple’s Worldwide Developers Conference in ...

OS X may be retired, but it deserves to be remembered. Take a trip back with these 14 key milestones in the double-decade history of the operating system that helped transform a nearly bankrupt Apple ...

Today marks the 20th anniversary of Mac OS X, the Mac operating system that changed everything. Arriving only a couple years after the first iMac, it helped forge Apple’s image as the king of cool — ...

Apple’s new operating system, Mavericks has been available to download since the end of October 2013. It’s a free upgrade for all versions of Mac OS X going back to 2009 – that’s Snow Leopard and ...

We recommend the following procedure when installing Mac OS X 10.4.7. First, avoid performing any other operations (in Mac OS X or third-party applications) while the update process is occurring. In ...

Until recently if you wanted to upgrade (or downgrade) old Mac to Mac OS X Lion (from 2011) or Mountain Lion (from 2012) you needed to pay Apple and the company would send you a special download code ...