PC with installed OS Windows XP, Vista or 7, with a USB 1.1 (or better 2.0) port; Mac OS X from 10.5.1 to 10.10.5. At least 20 MB of free space on hard drive. At least 256 MB of RAM.
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.
If 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.
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