Even if you did manage to get a copy via third-party means, code baked into the install will stop it from running on unsupported hardware, but there is a workaround. You may take a hit in terms of performance, you may need to leave System Integrity Protection in a lowered state (or disable it altogether), and the process may take much longer than expected. The problem is that, if you’re running an older unsupported machine, macOS Catalina simply won’t be available to download via the App Store. When you have a compatible Mac and the macOS Catalina download completes, but there’s no prompt for the installation to continue, then search in your Mac’s application folder for a file called. You’ll need to download an installer, create a bootable USB drive, patch the drive to enable support for your Mac, and see the installation process through. How to Install macOS Catalina on Unsupported Mac. Installing an unsupported version of macOS on your Mac takes a decent amount of work the process is more involved than the usual macOS installation upgrade process. macOS Catalina is the most advanced version of the macOS which comes in our hands-on October 7, 2019. Here’s how to do it and some things to keep in mind if you go this route. Has Apple ended support for your Mac? You can install new versions of macOS anyway by creating your own patched installed. Tutorial Video How to Install macOS 10.15 Catalina on an Unsupported Mac Watch on System Compatibility Early-2008 or newer Mac Pro, iMac, or MacBook Pro: MacPro3,1 MacPro4,1 MacPro5,1 iMac8,1 iMac9,1 iMac10,x iMac11,x (systems with AMD Radeon HD 5xxx and 6xxx series GPUs will be almost unusable when running Catalina. Install macOS as usual and then finish up the installation by installing OpenCore on your internal drive and running any necessary post-install patches. Next, install OpenCore to the USB drive and boot your Mac using the drive. To install an unsupported version of macOS on your Mac, first download OpenCore Legacy Patcher and use it to create installation media for your chosen macOS version.
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