This is a real operating system blast from the past.

No, you’re not reading an old article. Apple has just removed OS X Lion and OS X Mountain Lion from its online store. Both installers remained available in Apple’s online store for years, even after ...

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 ...

Macworld A lot of Mac users don’t remember a time before Mac OS X (or macOS, or OS X, depending on the era), but before OS X arrived on the scene, the Mac ran on an entirely different operating system ...

The Basilisk II emulator can be used to run old versions of Mac OS 8 and System 7 on a modern Mac. Here's how to get started using it. Before macOS and OS X, there was Mac OS 9, and before that were ...

The Virtual OS Museum is a giant mixtape for enthusiasts of the history of OS evolution. As an indication of its breadth of ...

Editor’s note: Roman’s faulty memory incorrectly stated originally that Apple removed the installation discs from the Apple Store. Apple actually offered Lion and Mountain Lion download codes through ...

UTM is an emulator for virtualizing other operating systems. Here's how to use it to run Apple's Mac OS 9 on a Mac running on Apple Silicon. UTM is an OS emulator that lets you virtualize and run a ...