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Lsof | grep /Volumes/'Install macOS High Sierra' Unmount of disk1 failed: at least one volume could not be unmounted Sudo dd if=/dev/zero of=/dev/disk1 bs=10000000ĭisk1 was already unmounted or it has a partitioning scheme so use "diskutil unmountDisk" instead Started erase on disk1 Unmounting disk Error: -69888: Couldn't unmount disk Sudo diskutil eraseDisk JHFS+ Lexar disk1 Using the Terminal app with the following commands: Using Disk Utility app, but it does not see the USB or just keeps spinning. Would you have any suggestions or ideas? Also, I don't understand what PID 0 is doing to prevent me from erasing the USB. This will list all of the available but unmounted volumes, here is an example of.
#At least one volume could not be unmounted mean driver
Now that I’m done with it, I cannot erase it. You do not need a GPU-specific driver at the host ESXi level for this. I created a bootable USB with High Sierra on it.