first aid volume could not be unmounted imac

Here the macOS’s internal representation of the drive is “disk2”.

Find out the external drive not mounting from the resulting list.

Type the command line: diskutil list > press Enter.

Launch Terminal by using Spotlight Search.

Anyway, you can have a try through following the instruction in details. While the pity is that Terminal doesn’t work for undetected disks in all cases. Several specific Terminal command lines are capable of removing files which block your external hard drive from mounting normally.

Method 1: Force mount external hard drive on Mac with Terminal 2 tips on how to force mount external hard drive on Mac will be laid as follows. 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. Incompatible file system of the storage device.Here they are:įoreign matters like dust may stay on the USB connectors and ports between your external hard drive and Mac, resulting in a dirty and loose connection, which hinders your drive from being detected by Mac. Prior to delving into the methods of fixing external hard drive not mounting on Mac, you’d better first know the major reasons why the drive can’t be properly mounted, to gain a deeper understanding of this issue. Why is My External Hard Drive not Mounting on Mac? How to Recover Data from Unmountable External Hard Drive on Mac?.How to Fix External Hard Drive not Mounting on Mac Issue?.How to Force Mount External Hard Drive on Mac?.

First aid volume could not be unmounted imac