Mac OS X introduced concepts then foreign to Mac users, like the Dock and Terminal. As someone who lived through the transition, Mac OS X was a huge leap forward. It made not only the classic Mac OS ...

Fortunately, it made a good one, resulting in Mac OS X 10.0, which shipped 20 years ago this week. Classic Mac OS had to die Classic Mac OS—the Mac operating system before OS X—was built on a ...

Mac OS X launched 20 years ago today. A lot has changed since then, but its legacy as one of Apple’s most important Mac software developments remains.

Since Mac OS X 10.7 versions of the Mac operating system are only licensed to be run in a virtual machine if the host Mac is running the same version.

Mac OS X 10.7 was first shown to the public in October 2010. The presentation was understated, especially compared to the bold rhetoric that accompanied the launches of the iPhone ...

In that way, this isn’t just the 20th anniversary of Mac OS X 10.0. It’s the 20th anniversary of modern Apple, and the end of the dark days when Apple couldn’t fix its own operating system.

If you're looking to download Mac OS X Mountain Lion, you'll need at least OS X Snow Leopard, Lion 10.7, or Mountain Lion 10.8. You'll also need 2GB memory, and 8GB data storage.

Shut down the target Mac (the one on which you would like to install Mac OS X 10.4) Connect the target Mac to another system with a DVD drive running Mac OS X, using a standard FireWire cable.

Combo vs. Delta Remember that delta Mac OS X updaters can only update systems version-to-version, e.g. Mac OS X 10.4.8 to Mac OS X 10.4.9.