About This Content Galactic Riches! Enjoy cosmic wealth at a down-to-earth price! There's the D.W. 2 Collector tank in an animated camouflage of celestial beauty, 168 Earth hours of Premium Account, a heap of boosters that stretch into low orbit, and certificates for x5. Jump to Content. Access all of your Google Drive content directly from your Mac or PC, without using up disk space. Learn more Download Backup and Sync for Mac Download Backup. Ctrl + A to jump to start of the line ctrl + E to jump to end of the line ctrl + K to kill the line starting from the cursor position ctrl + Y to paste text from the kill buffer. MacOS Big Sur elevates the most advanced desktop operating system in the world to a new level of power and beauty. Experience Mac to the fullest with a refined new design. Enjoy the biggest Safari update ever. Discover new features for Maps and Messages. And get even more transparency around your privacy.

Is your Mac up to date with the latest version of the Mac operating system? Is it using the version required by a 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.

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

Which macOS version is installed?

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

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 Big Sur. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.

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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