Dec 18, 2025 · Download and install current or previous versions of the Mac operating system on compatible Mac computers.

Learn how to set up and use your Mac computer. Find all the topics, resources, and contact options you need for Mac.

Upgrade to macOS Monterey See if your Mac is compatible, learn how to make a backup, and get ready to upgrade.

Use About This Mac to see the version of Mac operating system installed on your Mac.

5 days ago · To maintain your computer's security, stability, and compatibility, Apple recommends using the latest macOS that is compatible with your Mac. macOS updates and upgrades also …

Dec 10, 2025 · Use macOS Recovery, your computer’s built-in recovery system, to reinstall the Mac operating system.

Learn what’s new in macOS, how to get started with your Mac and use it with your Apple devices, and how to control privacy and security on macOS.

Oct 15, 2025 · You can use a USB flash drive or other secondary volume as a startup disk from which to install the Mac operating system. These steps are primarily for system administrators …

Learn more about popular features and topics, and find resources that will help you with all of your Apple products.

Find out how to set up and use your Mac computer. Find all of the topics, resources and contact options you need for Mac.