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.

Apple has published download links for Mac OS X 10.7 Lion and Mac OS X 10.8 Mountain Lion in its support area. The operating systems can be downloaded from the following links: ...

Yesterday Apple released Mac OS 10.5.7, a widely anticipated update to Mac OS X that includes "general operating system fixes that enhance the stability, compatibility and security of your Mac.

Though you can install Lion directly from your Mac's hard drive, a bootable installer drive or DVD can be more convenient for installing Lion onto multiple Macs, and if your Mac is experiencing ...

Special Report: Troubleshooting Mac OS X 10.3 (Panther)Finally, if you want to avoid many problems, be a conscientious upgrader; although there are always going to be issues with updates and ...

There are a number of third-party software and hardware products that are incompatible with Mac OS X 10.5.x (Leopard). Incompatibility can mean many different things. It can mean: a product loses ...