
Before digging out the reason to repair the unmounted drive, you are suggested to try to force mount it on your Mac for sake of efficiency. If you have checked the connection to be fine and also have rebooted your Mac, but your Mac still fails to mount the external hard drive, it indicates that the unmounting issue is caused by other potential reasons. How to Force Mount External Hard Drive on Mac? For another, there is a chance that the USB connecting cable has been broken.

A damaged hard drive is unmountable most of the time. This is one reason that people usually ignore.ĭue to firmware faults, power surge, overheating or mechanical failure, external hard drive partition might be corrupted. It is possible that the file system format of your external hard dive is not supported by Mac, so Mac can’t recognize it successfully.

How to Fix External Hard Drive not Mounting on Mac Issue?.How to Force Mount External Hard Drive on Mac?.
