How can I fix this? Failed to delete volume. Hard disk error cannot be cleared

November 14, 2020 by Logan Robertson

 

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If you receive an error message about deleting a volume, the hard disk error cannot be resolved. Today's procedure is designed to help you with this. Disconnecting the hard drive makes it inaccessible to the computer. To prevent the hard drive from being mounted, it must of course be mounted first. When the hard drive is mounted, it is active and the computer can access its contents.

 

 

Disk Utility usually works fine, but the frustrating "Unable to unmount disk" error can stop a completed task. This can happen during disk partitioning, disk validation and repair, and formatting. Usually, little or no additional information is provided on how to fix a problem or even a problem with an error message or application in Mac OS.


Typically, the "Unable to unmount drive" error occurs when you change the current boot drive or when trying to erase a drive. The uninstall might have failed because the disk could not be unmounted. In the previous situation, where the boot disk was replaced, the simplest solution was to boot from the other disk and run Disk Utility instead. As for the boot disk, it doesn't matter what version of Mac OS X it has (assumes 10.7, 10.8, 10.9, 10.10, 10.12, 10.13, 10.14, etc.). The only requirement is Disk Utility - that they all do. So, no matter what the cause, there are two ways to fix the problem. The first method is safesolution, while the second only works occasionally. We'll cover both options with some clarification. We'll also show you how to force unmount a drive using the command line. However, this approach should be used with caution as it could result in data loss on the drive in question.

Part 1: What Does "hard Drive Cannot Be Disconnected" Mean?

To learn more about solutions, start by learning more about unmounting disks and utilities, and what causes disk failure.

  • If you are disconnecting a hard drive, you must disconnect the optical or hard drive from your computer.
  • Typically, the "Unable to unmount drive" error occurs when you try to format, partition, check, or repair an internal drive using Disk Utility on a Mac.
  • Use The Command Line To Resolve The "Unable To Unmount Drive" Error

    • Open a terminal application.
    • Enter a string for the discussion list.
  • When a list of all hard drives appears, you need toTo find a hard drive that you want to force unlock.
  • Enter sudo suchenil unmountDisk force / dev / diskx.
  • Replace / dev / diskx with the correct disk number.
  • To force mount the Mac hard drive, follow these steps.
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    Why can't I erase my Macbook Pro hard drive?

    Whenever you try to reformat or erase the boot drive on your Mac, the first thing you need to do is enter recovery mode. The boot drive is your computer's primary hard drive, which stores macOS and all of your data. Usually, you cannot erase the startup disk because your Mac uses it to run macOS.


    What happens if I unmount Macintosh HD?

    If you unplug and unplug a hard drive and then plug it back in later, Disk Utility will automatically recreate the hard drive item if you selected Auto Rebuild when creating a set of hard drives. If you need to repair your hard drive manually, see Repairing a hard drive in the hard drive assembly.


     

     

     

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