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This occurs when the copy of the macOS Catalina Installer app used has gotten corrupted somehow. To rectify this, use Catalina Patcher to download a fresh copy of the Catalina installer, then re-create an installer volume and/or retry the installation.
Sep 11, 2022 · macOS Catalina Patcher lets you install macOS Catalina on Mac computers that are no longer officially supported. It can help you create a bootable USB drive that can be used to install macOS Catalina on Mac computers older than mid 2012.
macOS Catalina Patcher. The easy way to run macOS Catalina on your Unsupported Mac. Use the Xcode Project to build. Excluding patched binary files, this repo is governed by GNU GPL v3. APFS BootROM Support: If you have a machine that supports High Sierra natively, you MUST ensure you have the latest version of the system's BootROM installed.
Added much-needed improvements to Legacy Video Card Patch for non-Metal video cards; Fixed Library Validation/App Crashing issues; Updated MouSSE to latest version
Dec 6, 2019 · DosDude Catalina Patcher is a popular third-party tool that allows users to patch the MacOS Catalina installer on otherwise unsupported Macs.
Keep your aging Mac from going obsolete by installing a patched version of macOS Catalina. Note that installing future Catalina updates from Apple on your Mac is not supported by the patching tool, and you may be required to erase your drive and start this process over after doing so.
Nov 8, 2019 · The video below demonstrates a tutorial walking through the process of using the DosDude Catalina patcher tool to install the macOS 10.15 system software on an unsupported Mac.
