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#Unable to unmount for repair mac mac os x
#Unable to unmount for repair mac install
#Unable to unmount for repair mac verification
#Unable to unmount for repair mac mac

Select your preferred language and then click continue.And if it doesn’t try this step once more. Your computer will boot into the Utilities.After doing so, when you see the Apple logo, you must release the buttons.Then immediately, press and hold the Command + R buttons.

#Unable to unmount for repair mac mac

If none of the Apple macOS Could not be Installed on your Computer /system/installation/packages/osinstall.mpkg method mentioned above worked for you, then you can try to boot your Mac with the Recovery Mode in order to restore it from Time Machine when your macOS is stuck and cannot be installed.

First Aid will check for errors, and if it is corrupted, it will repair the volume.

After this, choose your primary HDD as the volume that should be repaired.

Open First Aid, and then Run to start to check the volume for errors.

This will boot your Mac into Safe Mode.

Then immediately, press and hold the Shift key.

Then press the power button once more in order to turn it on.

Press and hold the power button to shut down your Mac.

This problem can be solved by running the Disk Utility to check and repair the volume, which can solve this problem. If the above cause isn’t the reason for this Apple macOS Could not be Installed on your Computer the path /system/installation/packages/osinstall.mpkg problem, then we assume that the problem can be in your Disk volume. Run Disk Utility’s First Aid in Safe Mode –

Now lastly, enter the correct date and time.Ģ.

If they are not the same, click the lock to enable them to make changes.

Check if the date and time are the same as your current time zone.

Open the System Preferences on your Mac.

After your Mac is shut down, press and hold the power button to turn it off.

Firstly press and hold the power button to turn off your Mac.

#Unable to unmount for repair mac install

If time and date are wrong, you will be unable to install the macOS. Check the Date & Time –Īs far as we know, this Apple macOS Could not be Installed on your Computer the installer resources were not found the issue on your Mac can be caused because of the wrong date or time on your computer. Fortunately, there are lots of ways which you can do to fix this problem.

#Unable to unmount for repair mac mac os x

If you cannot determine which files are open on the disk that you want to verify or repair, restart your computer and then mount the disk again, or start up from your Mac OS X Install DVD or CD to repair.Experiencing the new version of macOS is always exciting, Still, it can quickly become frustrating if, instead of being presented with a brand new Mac, ready to use, you see an error message like Apple macOS could not be installed on your computer error. In some rare situations, your computer might not respond for several seconds. Verify and Repair disk "Storage." The disk “Storage” could not be unmounted. If you look in the Console (/Applications/Utilities/), you will see an entry like this: If you try to repair a disk that cannot be unmounted, the repair will appear to start, but then stop as Disk Utility displays this message: "Repairing disk failed with error. Verifying volume “Storage” The disk “Storage” could not be unmounted Could not unmount disk for verification, attempting live verify

#Unable to unmount for repair mac verification

If you try to verify a volume that is not your startup disk but for some reason Disk Utility can't unmount the volume (for example, the disk may have open files), the verification will appear to start but then stop without displaying any alert message. I would recommend you read this article and use it to help troubleshoot the issue. It seems like you want to repair your external drive but it is giving you an error that it is not able to unmount and repair. Thank you for using Apple Support Communities.