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Volume could not be unmounted using disk utility
Volume could not be unmounted using disk utility











volume could not be unmounted using disk utility

I've done all of the above several times.Īny ideas for untrashing this 2TB Seagate drive? Using a MacBook Pro with High Sierra. When I try to reboot, the desktop icons disappear, the reboot never finishes and I end up forcing a shutdown via the power button.

volume could not be unmounted using disk utility

resulted in "Unmount of disk2 failed: at least one volume could not be unmounted." which resulted in an error that it was already unmounted or "has a partitioning scheme so use 'disk util unmountDisk' instead" which resulted in an error -69888: Couldn't unmount disk. Sudo diskutil eraseDisk JHFS+ Reformat /dev/disk2

volume could not be unmounted using disk utility

Disk Utility failed to unmount the Data partition and reported the TM partition was OK, but I can't eject either without issues: Trying to reformat a drive that was used for an employee's Time Machine and Data storage.













Volume could not be unmounted using disk utility