We recommend that you give all of them a try, starting with the easiest and quickest ones from the top of the list. As there are plenty of things that could be causing issues with your macOS update, any of the following methods might fix the problem. How to Troubleshoot the Error: macOS Couldn’t Be Installed on Your ComputerĪfter you’ve backed up your Mac, you can proceed to troubleshoot the error and complete installing the macOS update. It’ll keep your data safe and allow you to restore the important files from the date of your choice in case something goes wrong and you have to erase your entire Mac. You can backup your Mac using Disk Utility or Time Machine before updating your computer. How to Prepare Your Mac for Troubleshootingīefore you begin troubleshooting the macOS installation error, you might want to protect your data and make sure you don’t lose any important information in the process. No matter what caused the error message to appear on your Mac, you can fix it by following the troubleshooting steps described below. While these messages don’t offer too many details on what the problem is, they give you an idea of what stages of the installation process couldn’t be completed. The message might say “the path/System/Installation/Packages/OSInstall.mpkg appears to be missing or damaged”, “an error occurred while verifying firmware”, “unable to unmount volume for repair”, or something different. The error message that pops up normally comes with a message underneath it that gives you an explanation of what went wrong. Not having enough free space on your Mac.Some of the most common reasons why you’ve been getting this error include:
There are quite a few different reasons why a macOS installation might fail. Why the macOS Couldn’t Be Installed Error Appears
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