


Disk Utility Failure: Disk Utility is the native Mac tool that allows you to manage storage devices.This problem can be easily solved by cleaning the ports with compressed air. Faulty Thunderbolt or USB Port: Sometimes when USB or Thunderbolt ports are damaged or clogged with dust, they do not allow a stable connection with the devices.File System Corruption: When a disk has suffered data corruption, the disk format may be affected, making your Mac unable to recognize the disk as a storage unit.It is advisable to periodically check the physical condition of all components. Bad Connector: External disks are exposed to environmental factors and possible physical damage caused by the constant movement of their components.Improper Connection: It is important to make sure that the cables of your external disk are properly connected since otherwise, this can interrupt the data transfer processes and cause damage to your information.Next, I will talk about the most common causes of APFS unmounting. The causes of this problem are usually easy to prevent by taking some precautionary measures, also, knowing the possible causes is necessary to make an accurate diagnosis of the current state of your hard drive and thus know if it is prudent or not to continue using it if you need change some component.

