4/29/2023 0 Comments Repair disk mapYou might also need to target the disk by device identifier to forcibly unmount it, in which case you can first find the disk with: If that doesn’t work, you can take this a step further: Replace “DRIVENAME” with the name of the volume you want to unmount, then hit RETURN key to force the drive to unmount. Thus this is only appropriate if you plan on formatting and erasing the disk to you are force ejecting anyway.įrom the command line of Mac OS, enter the following string:ĭiskutil unmountDisk force /Volumes/DRIVENAME How to Forcibly Unmount a Disk by Command Line in Mac OSĪnother method uses the command line to force unmount a disk, but this is not the top recommended option because of potential for data loss.Ĭaution must be used with this approach however because forcibly unmounting a disk can cause data loss of the drive being forcibly unmounted. In that case, you’ll need to boot from a separate USB drive to fix the error.
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