In this guide, we will look at some of the installation problems that tend to occur with new releases of the Mac operating system. With any luck, you may be able to either correct the issue, allowing you to finish the installation, or prevent the problem from occurring in the first place.
How to fix 'The installation failed' error on Mac
Edovia Support
Unrecoverable error - Apple Community
Mac OS - How To Fix “Installation Failed” - Error Occurred While Installing Updates
How to Fix An Error Occurred While Preparing The Installation on Mac
Mac Installation Errors You Encounter and How to Fix Them
MacBook Pro Dead or Not Turning on? Here is Quick Fix - The Lappy Maker® Blog
Big Sur 11.0.1 RC2 Full Installer = An Error occurred installing macOS
How to Fix Zoom “The Installation Failed” Error on Mac
How to Verify and Repair Mac Disk Errors
installation permissions - Apple Community
Fixing 'an error occurred while preparing the installation
