Troubleshooting an Error During macOS Installation on Mac OS Mojave

Are you trying to install or reinstall macOS on your Mac OS Mojave machine but running into an unspecified error? If so, you're not alone. Many users have reported encountering this issue during the installation process, which can be frustrating and time-consuming. In this article, we'll explore the possible causes of this error and provide a simple fix to get you back up and running.

The error in question states 'An Error occurred while preparing the installation' as soon as you click 'Continue.' This is an unexpected issue that can halt your progress, leaving you wondering what's going wrong. However, after booting into the recovery partition and selecting 'Reinstall OS X,' a new window will appear - the 'Eligibility Verification' window.

So, how do you resolve this error? While it may seem like a daunting task, there is a relatively simple fix that can get your installation back on track. One of the most common causes of this error is an issue with the disk or volume where you're trying to install macOS. This could be due to corruption, formatting issues, or even a faulty hard drive.

To resolve this issue, try reinstalling macOS from the recovery partition. You can do this by restarting your Mac and immediately holding down the Command (⌘) + R keys. This will boot your Mac into the recovery partition, where you can select 'Reinstall OS X' to start the installation process again. If you're still encountering issues, try formatting the disk or volume before reinstalling macOS.

In some cases, this error may be caused by a more complex issue, such as a problem with your Mac's hardware or a corrupted system file. In these situations, it may be necessary to seek assistance from an Apple Support specialist or visit an authorized service provider for further diagnosis and repair.

As a technical support expert at OWC (Other World Computing), I've helped numerous customers troubleshoot and resolve various errors and problems that have occurred during macOS installations. With the right guidance and tools, you can overcome even the most stubborn issues and get your Mac up and running smoothly again.

By following these simple steps and troubleshooting tips, you should be able to resolve the 'An Error occurred while preparing the installation' issue on your Mac OS Mojave machine. Remember to always backup your data regularly and stay up-to-date with the latest software updates to minimize the risk of encountering errors during future installations.

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