Boot into or install Mac OS 9 Alternatively, you can boot into Mac OS 9 if it is installed on the target system, or install Mac OS 9 from included or purchased media, then apply the same firmware ...

One way of avoiding a disastrous upgrade to Apple's latest version of macOS is to partition your Mac's hard drive and install Catalina alongside your current operating system.

Mac OS X Lion is easier to install than any previous version of Mac OS X but things can go awry. Find some solutions here.

Apple has rolled out the fifth public beta of macOS Tahoe 26, ahead of the official launch next month. Here's what's coming.

Apple today released macOS 12 Monterey, and whenever a new operating system is released for the Mac, some users prefer to perform a clean installation. This article explains how to perform what is ...

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.

Homebrew is a macOS package manager that lets users install and manage UNIX tools and 3rd party software. Here's how to get started.