![]() All releases from Mac OS X Leopard onward with the exclusion of Mac OS X Lion are UNIX 03 certified. The first desktop version, Mac OS X 10.0, was released on March 24, 2001. During this time, Apple computers co-founder Steve Jobs had left Apple and started his own company, NeXT, developing the NeXTSTEP platform that would later be acquired by Apple to form the basis of Mac OS X. Mac OS X succeeded classic Mac OS, a Macintosh operating system from 1984 to 2001. Within the market of desktop and laptop computers, it is the second most widely used desktop OS, after Microsoft Windows and ahead of all Linux machines, including ChromeOS. It is the primary operating system for Apple's Mac computers. Launch Install macOS Public Beta app, if it's not launched already.MacOS ( / ˌ m æ k oʊ ˈ ɛ s/ originally Mac OS X, previously shortened as OS X) is an operating system developed and marketed by Apple Inc.If it doesn't, or if you prefer to do it later, you open Install macOS Public Beta at any time via Spotlight or Launchpad, or from the Application folder in the Finder. The macOS public beta installer will automatically open when it's downloaded. ![]() How to install the macOS Catalina public beta You can check the status in the Software Updates preference pane of System Preferences. The public beta update can take a long time to finish downloading, depending on the size. Then, open System Preferences and click the Software Updates pane. If the latest public beta does not appear on the Updates list, restart your Mac. After the software has been downloaded, your Mac will automatically restart. Click Update to download and install the public beta software. When the installer is finished downloading, System Preferences will automatically open to the Software Updates section. Double-click the package to run the installer.Open the file from your Downloads window.Click the Download macOS Public Beta Access Utility button.Click on the macOS tab, if it's not highlighted already.How to enroll your Mac in the macOS Catalina public betaĭownloading the macOS Catalina public beta is done through System Preferences in the Software Updates. Once you're signed up and signed in, it's time to start downloading. ![]() Click on the Time Machine icon in your Mac Menubar. ![]() Even if you use something different or additional, like SuperDuper!, make sure you manually start a backup now. That way, if something goes wrong, or if you're simply not happy and want to revert to macOS Mojave, you can go right back to where you started.Įven if you back up every night, you'll want to make double, triple sure you're covered.
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