How you can Repair Error Occurred Getting ready macOS Sierra Set up

On a considerably frequent bases, putting in or upgrading macOS halts with a message instantly showing. One instance is a pop-up that reads, “an error occurred whereas making ready the set up of macOS Sierra.” Following that, you’re prompted to “strive operating this software once more. This has occurred typically occurs when reinstalling macOS Sierra, but it surely’s additionally been identified to occur with newer variations. Let’s stroll by some attainable methods to resolve this error.

Begin by Booting Your Mac Into Secure Mode

The very first thing that you need to strive is in addition your Mac into Secure Mode. The method of rebooting in protected mode differs between Apple Silicon Macs and Intel-based computer systems.

As well your Apple Silicon Mac into Secure Mode, observe these steps.

1. Shut down your Mac.
2. When utterly shut down, press and maintain the facility button till “Loading Startup Choices” seems.
3. Choose a quantity.
4. Press and maintain the Shift key, then click on Proceed to Secure Mode.
5. Wait in your Mac to restart, and you need to see “Secure Mode” when the login window reappears.

If you happen to’re utilizing an Intel-Primarily based Mac, observe this process.

1. Restart your Mac, then instantly press and maintain the Shift key till the login window seems.
2. Log in to your Mac.
3. Chances are you’ll be requested to log in twice, relying on when the Secure Mode message seems.

Now, proceed with attempting to reinstall macOS. Hopefully, after doing the steps above, the message “an error occurred whereas making ready the set up of macOS” will not seem if you attempt to reinstall macOS Sierra or later.

Incorrect Information and Time Settings May Trigger ‘Error Occurred Whereas Getting ready The Set up of macOS’

Correcting your Mac’s Date and Time settings would possibly clear up points with the “error occurred whereas making ready the set up” popup. Set the information and time routinely by going to System Settings > Basic > Information and Time > Set time zone routinely. Now, restart your Mac and take a look at the set up once more.

Reinstall macOS With out Erasing the Drive

Generally, repairing your disk after which reinstalling macOS with out erasing the drive would possibly forestall the error from occurring.

Reinstall macOS After Erasing the Drive First to Attempt Skirting ‘Error Occurred Whereas Getting ready The Set up of macOS’

In some circumstances, chances are you’ll have to erase the drive first earlier than reinstalling macOS. This would possibly forestall the error from displaying up once more. Comply with the steps beneath to erase the drive first earlier than you reinstall macOS.

1. Restart your Mac, after which instantly press and maintain the Command + R keys as quickly as you hear the chime.
   • Once more, Apple silicon Mac homeowners want solely maintain the facility button till the restoration menu seems.
2. Launch the keys when the globe or Apple brand seems.
3. When the Utility Menu seems, click on Disk Utility > Proceed.
4. Choose your drive, then click on the Erase tab.
5. Set the partition scheme into GUID, then choose the format sort to macOS Prolonged (Journaled).
6. Click on Apply > Completed.
7. Give up Disk Utility and reinstall macOS.

As a Final Resort, Your Nearest Apple Service Middle

Ought to the troubleshooting ideas above fail to cease the error message, it’s time to carry your Mac to the closest Apple Service Middle for restore.