If you have hardware or software that isn't compatible with Catalina, you might be able to install an earlier macOS, such as Mojave, High Sierra, Sierra, or El Capitan.
If you're using OS X El Capitan v10.11.5 or later and your App Store preferences or Software Update preferences are set to download new updates when available, macOS Catalina will download conveniently in the background, making it even easier to upgrade. You can also use Software Update to check for updates: Choose Apple menu > System Preferences, then click Software Update. Stay up to dateĪfter installing macOS Catalina, you will be notified when updates to macOS Catalina are available. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both macOS and related updates to your Mac firmware. Please allow installation to complete without putting your Mac to sleep or closing its lid. If the installer asks for permission to install a helper tool, enter the administrator name and password that you use to log in to your Mac, then click Add Helper. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed. Begin installationĪfter downloading, the installer opens automatically.Ĭlick Continue and follow the onscreen instructions. Then click the Get button or iCloud download icon. Or use this link to open the macOS Catalina page on the App Store: Get macOS Catalina. If you're using macOS Mojave, get macOS Catalina via Software Update: Choose Apple menu > System Preferences, then click Software Update.
If you're using a Mac notebook computer, plug it into AC power. It takes time to download and install macOS, so make sure that you have a reliable Internet connection. Time Machine makes it simple, and other backup methods are also available. Make a backupīefore installing any upgrade, it’s a good idea to back up your Mac. View the complete list of compatible computers. If your Mac isn't compatible with macOS Catalina, the installer will let you know. To find your macOS version, Mac model, memory, and storage space, choose About This Mac from the Apple menu . * To upgrade from Lion or Mountain Lion, first upgrade to El Capitan, then upgrade to Catalina. Your Mac also needs at least 4GB of memory and 12.5GB of available storage space, or up to 18.5GB of storage space when upgrading from OS X Yosemite or earlier. If you're using one of these computers with OS X Mavericks or later,* you can install macOS Catalina. Now you can take everything you do above and beyond.
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