O'Reilly logo

Take Control of Upgrading to Mountain Lion by Joe Kissell

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Make Final Preparations

Now that you know which basic technique you’re going to use, you’re nearly ready to proceed. Your next step (which could take hours, or even longer) is to obtain the Mountain Lion installer; then I’ll recommend a few other quick, last-minute tasks before you dive in.

Obtain the Installer

Depending on your situation, obtaining the Mountain Lion installer may be a trivial matter of a few clicks, or it may be an involved ordeal. Let’s start with the easiest case first.

Buy Mountain Lion on the Destination Mac

If you’re running 10.6.8 or later and have a broadband Internet connection that can handle a 4+ GB download, obtaining Mountain Lion is easy—it’s just like buying any other app:

1.Click the App Store icon in your Dock, click ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required