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In addition, Catalina also includes support for Apple's Screen Time tracker, an upgraded Photos app, and revamped tools for managing your files, including support for using Google drive on your Mac. Unfortunately, these features aren’t available for everyone since Apple doesn't allow you to install Catalina on older machines. The upgrade install merges the new macOS Catalina with your existing Mac OS. This is the upgrade method we will cover in this Rocket Yard guide. Before we begin the upgrade process, a few tips and notes about macOS Catalina and what you need to do to be ready for the install on your Mac. 2017 27' iMac, 10.5' iPad Pro, iPhone 8, iPhone 11, iPhone 12 Mini, Numerous iPods, Big Sur. There's several long threads at MacRumors describing how the update to Catalina and the supplemental update to 10.15.4 bricked certain MacBook Pros and MacBook Air machines that contain the T2 security chip.
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