Easily check which versions of mac OS, iOS, iPadOS, or watchOS are compatible with your Mac model or iDevice. Guide includes OS X 10.8.x to macOS 11.0.x. The new version of OS X for Mac. OS X 10.9 Mavericks supersedes OS X 10.8 Mountain Lion and is the first version of OS X to be free. Although it doesn't introduce any revolutionary changes to OS X, it includes some nice features, especially for fans of iOS, Maps and iBooks. Maps comes to OS X. 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.
Before installing this upgrade, make sure that your Mac is ready.
macOS Big Sur supports most Mac models introduced in 2013 and later.
View compatible Mac modelsBefore you upgrade, make a complete backup with Time Machine, or store your files in iCloud.
Learn how to back up your MacIf the installer needs more storage space to upgrade, you can free up space using tools that come with your Mac.
Free up storage spaceIf you’re using macOS Mojave or later, choose Apple menu > System Preferences, then click Software Update. If you’re using an earlier macOS, use the App Store instead.
Learn how to download and install macOS Big SurGo to the App StoreLearn about some of the new features of macOS Big Sur.
Control Center brings favorite controls such as Bluetooth, Wi-Fi, Do Not Disturb, and Sound together in a single place—so you can easily adjust them at any time.
Use Control CenterNotification Center puts notifications and>
Customize your start page, navigate with ease using the new tab bar, and access a new privacy report to see just how Safari protects your privacy as you browse.
Get to know SafariDiscover great places around the world and navigate easier with guides, cycling directions, indoor maps, Look Around, electric vehicle routing, and more.
Send messages to friends and family using new tools that make it easier to keep track of group conversations and give you fun, engaging ways to express yourself.
Use MessagesLearn more on YouTubeUse the expanded editing capabilities in Photos to easily make simple changes and more advanced adjustments to your photos.
Learn how to edit your photosAsk everyone. Our Apple Support Community can help you find answers.
Ask nowAnswer a few questions and we'll help you find a solution.