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#MAC OS DISK UTILITY COULDNT OPEN INSTALL#
#MAC OS DISK UTILITY COULDNT OPEN UPDATE#

Then, update your macOS and see if the issue is fixed. In the Startup Manager interface, choose your primary disk that is usually Macintosh HD.When it starts booting, press and hold the Alt key.This allows you to choose a startup disk and then the Mac can boot from the disk. The next thing you can try is to start up your machine using Startup Manager. Method 2: Start up Your Mac Using Startup Manager

#MAC OS DISK UTILITY COULDNT OPEN INSTALL#

Just open App Store and try to install the update again to see if the issue is fixed.

When you see the Apple logo, release the key.

When the machine begins restarting, keep holding down the Shift key.

This is the first thing you can do and just follow these steps below: If your Mac is stuck at the macOS installation error, you can recover important files from the Mac with professional Mac data recovery software - Stellar Data Recovery for Mac.Īfter finishing data backup or recovery, it is time to fix the installation issue. If your Mac can boot normally, you can use Time Machine to do this work. Fixes for macOS Installation Not Completed Back up Data in Advanceīefore you take measures to fix the installation issue, it is best to back up your data to avoid any accidents.

How can you fix the issue? Don’t worry and you can easily get rid of the trouble. Why macOS could not be installed on your computer? Perhaps the installation is interrupted by files from other mounted drives, the macOS installer is corrupted, or there is an issue with the system disk or target disk. And you are asked to start installation macOS again or use a different disk to start up your Mac. On the computer screen, you see the error message “the macOS installation couldn’t be completed”. According to users, the macOS installation cannot be completed on their Mac when trying to update the system. However, every operating system may encounter some issues. MacOS is a reliable operating system from Apple and keeping macOS up-to-date is important especially you want to keep the Mac safe. The macOS Installation Couldn’t Be Completed If you get the error “the macOS installation couldn’t be completed” when trying to update macOS, what should you do to fix the issue? It is easy to solve it if you follow these solutions collected by MiniTool Solution below.