Is your Mac up to date with the latest version of the Mac operating system (macOS or OS X)? Is it using the version required by some other product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.

Linux, FreeBSD, and More. RELATED: What Is a Linux Distro, and How Are They Different. The Macintosh Operating System (Mac OS) is a program that allows a Macintosh computer to operate and be used. Mac OS was first made by Apple Inc. In those days Mac OS was called Macintosh System Software – which was shortened to System or SSW (System Software).The term 'Mac OS' first appeared in the splash screen for System 7.5.1, but was not.

If your macOS isn't up to date, you may be able to update to a later version.

Which macOS version is installed?

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From the Apple menu  in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Mojave, followed by its version number. If you need to know the build number as well, click the version number to see it.

1. Do not add PC to this list, the list of PC operating systems is separate do to size. Contentsshow Amiga AmigaOS (Commodore-Amiga) Workbench (UI for AmigaDOS from v1.0 to v3.1) Amiga Unix (Commodore-Amiga) Apple II Apple DOS ProDOS GS/OS 65xx GEOS CP/M (With z80 daughter card) Apple III SOS (Sophisticated Operating System) CP/M Archimedes Arthur ARX.
2. Mac OS means Macintosh Operating System and offers an innovative usability. Support for multiple users and login with Voice Verification feature. You can encrypt and decrypt files with Apple File Security. Search assistant Sherlock 2 has been improved. Last Classic environment Mac OS that have been discontinued at the end of 2001.

This example shows macOS Catalina version 10.15 build 19A583.

Which macOS version is the latest?

These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Catalina. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.

List Of Operating Systems For Macbook Pro

If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.

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