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.
