convert external drive to apfs without erasing data

Steps to Mount Your APFS Drive via Disk Utility If this were the cause, the problem should be solved by reinstalling the operating system. Malfunction of macOS: The operating system malfunction is perhaps the least common cause but it is an option that you should not rule out.

Software Conflict: It is possible that a disk suddenly presents errors without being damaged and this may be due to a compatibility conflict with some installed software, so it is recommended not to install software from unknown or unverified developers.An error using this tool can unmount the disk. 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.

Part 4: How to Reformat the Unmounted APFS Drive?.

Part 3: How to Recover Data from Unmounted APFS External Hard Drive?.

Part 2: Steps to Mount Your APFS Drive via Disk Utility.

Part 1: What Are the Causes of APFS Unmounting?.

Convert external drive to apfs without erasing data