macOS - How to Upgrade - Apple
If your Mac is running OS X Mavericks 10.9 or later, you can upgrade directly to ...
Apple Software - Shopping Help - Apple
Older Versions of OS X. The current version of the Mac operating system is macOS Catalina. Learn how to ...
Apple Macbook Operating Systems In Order : Useful Links
Mac OS X / OS X / macOS[edit]. Main article: macOS. See also: macOS version history. macOS was previously ...
Use About This Mac to see the version of Mac operating system installed on your Mac, and find out whether it's the latest version.
List of macOS version names. Here's an overview of every version of macOS and Mac OS X Apple has released. You'll find a complete list of OS ...
Apple has a page for each release that in older versions of the OS describes the features required in Macs to handle it, and in newer versions lists ...
Meet Catalina: Apple's newest MacOS. At Monday's keynote address at WWDC, Apple revealed the next name of its Mac operating system.
with a large gray apple logo with the startup sequence of OS X 10.2 Jaguar.
Regular Systems · System 7.0 (68k) "Furnishings 2000" (1991) · System 7.0. 1 ( 68k) "Road Warrior" & "Beta Cheese" (1991) · System 7.1 (68k) "Cube-E" & "I Tripoli" ...
A full history of macOS (OS X) release dates and rates