mac disk utility erase process has failed

You will see the macOS utilities window.

Release the keys when you see the Apple logo or a spinning globe icon.

Power on your Mac and immediately press and hold Command (⌘)-R (see also: How To Back Up Your Mac That Won’t Boot).

If you are still having problems try this.

Once the download is completed, double click to run and to see if this completes the installation.

Locate the macOS combo update ( you can find the downloads here).

They are big files so it will take times to download and install. These update files are available on Apple websites. Depending on the macOS version you are trying to install, try using the macOS combo update.If nothing above helps, follow the steps below: If First Aid says the Disk is OK, then, on your computer, go to System Preferences> Users & Groups> and click the Login Items tab, if you see any third party apps there, click the minus icon and remove them.Restart your Mac, and while your computer restarting, immediately press and hold the Command and R keys until you see the Apple logo, then you can release the keys.If you are still having this issue, try repairing your disk. Select your regular/standard (usually Macintosh HD) disk and click the arrow icon under it and hit Enter.You will see the Startup Manager popup, now you can release the Option key.Immediately after turning on your Mac, press and hold the Option (alt) key.The next thing you should try is to start up your Mac using Startup Manager. This will put your computer in safe more. You can do so easily: Simply restart your computer and as soon as your computer begins restarting, press and hold the Shift key, until you see the Apple logo. The first thing you should try is to start your Mac in safe mode. Note that before trying anything, you may want to backup your device. Your Mac stuck in the middle of a macOS update and your Mac will not start up? Here is how you can fix it:

Please note that it has been reported that this issue may occur even when no upgrade or update is initiated. However, in some cases, you may encounter errors like this one. Updating your Mac is usually very simple process. It is highly likely that restarting your computer will produce the same error message. The error message has four options: Shut Down, Restart, Save Log and View Log. To start up your computer using a different disk, choose Startup Disk from the Utilities menu.” See the image below: To start installing macOS again, click Restart. “If you continue having a problem installing macOS, the installation log may help you diagnose the problem. This short article explains what you can do when you encounter the “ The macOS installation couldn’t be completed” error message.

Mac disk utility erase process has failed