![]() ![]() View the complete list of compatible computers. If your Mac isn't compatible with macOS Catalina, the installer will let you know. If you need help If youre having difficulty getting the links to work, try again using Safari. Follow the onscreen instructions to install macOS. Also, if you do upgrade directly from High Sierra to Catalina (skipping Mojave), there seem to be additional issues. Open your Applications folder and double-click the macOS installer, named Install Version Name. Time Machine hasn’t really been upgraded to support it fully, I’m afraid. To find your macOS version, Mac model, memory, and storage space, choose About This Mac from the Apple menu . Catalina now creates two partitions on the hard drive, one read-only system partition and one for data. ![]() * To upgrade from Lion or Mountain Lion, first upgrade to El Capitan, then upgrade to Catalina. ![]() (NOTE: There is a known issue with older versions of the Pulse Secure VPN client. 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. ![]()
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