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

Older Cat? Learn New Tricks

If you’re already running 10.7 Lion, skip ahead to Check Your Mac for Compatibility—there’s nothing to see here. But if your Mac is still using an older big cat—10.6 Snow Leopard, 10.5 Leopard, or 10.4 Tiger—you need to know about some profound changes that first appeared in Lion, and that you’ll encounter when you move to Mountain Lion. Some of these changes may force you to abandon software you’ve used for many years, adopt new habits, or reorient your thinking about how a Mac works.

Before you jump in, you should understand what awaits you—and what steps you’ll have to follow to ensure a smooth transition.

Plot a Post-Rosetta Strategy

Starting with Lion, Apple removed Rosetta, the software that enabled older, PowerPC ...

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