first aid high sierra volume could not be unmounted

Note down the disk identifier of the drive that First Aid can't unmount on Mac.Run the command below to list all drives connected to your Mac.Open Terminal from the Applications > Utilities folder.Nevertheless, if your drive is exhibiting behaviors, such as: : (-69673).' If your drive is in good condition, it likely is actively used by other programs or processes, which are preventing First Aid to unmount it. There are several reasons for 'Unable to unmount volume for repair. Recover lost files when facing 'Unable to unmount volume for repair' on Mac

How to fix 'Unable to unmount volume for repair 69673' on internal drives? How to fix 'Unable to unmount volume for repair 69673' on external drives? Guide to 'Unable to unmount volume for repair. Here, we will help you get your lost files back and fix the 'Unable to unmount volume for repair. : (-69673).' As the message implied, the error occurs due to a volume could not be unmounted. However, it sometimes fails its job and shows the error that reads ' Unable to unmount volume for repair. Disk Utility First Aid is the common go-to if you need to check and repair an internal or external drive on Mac.

First aid high sierra volume could not be unmounted