Newbies to the Mac, especially those finding boxes of older Mac OS X discs in garage sales, flea markets and on eBay, may believe they can install the software on their Mac. Unless that software ...

[Editor’s note: This article is part of our series of articles on installing and upgrading to Lion (OS X 10.7). We also have a complete guide to installing and upgrading to Mountain Lion (OS X 10.8).] ...

Eric Benfer (Systems Administrator at Johns Hopkins Applied Physics Lab) writes of an unexpected problem involving two different versions of the Mac OS 9.1 Software Install CD that shipped with Power ...

UTM is a cross-platform emulator that allows you to run macOS, Windows, or Linux. Here's how to use it to run very old versions of Apple's Mac operating system. But there's another great free OS ...

On May 17th, Mac OS X 10.4.1, the first major update to Tiger. The release is available through Software Update, or as a standalone download [37 MB]. The new release includes the following ...

The Aqua GUI in Apple’s operating systems has undergone a remarkable evolution since March of 2000, when it found its way into OS X 10.0, and you might be surprised at just how different everything ...

Updating to the latest version of macOS, or running a beta version of macOS on your Mac, doesn’t have to be an all-or-nothing affair. It’s possible to install two different operating systems and ...

Apple has spent the last decade building and improving Mac OS X, fusing the classic Mac OS and technology acquired from Steve Jobs’s Next into an impressive mainstream operating system that’s widely ...