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I have been unsuccessfully trying to erase the disk of my macair before giving it away. I got an error message, so I went through command line as instructed elsewhere on this forum. However, I get the following message:
MacBook-Air-6:~ alexandraverini$ diskutil unmountDisk force /dev/disk0
Forced unmount of disk0 failed: at least one volume could not be unmounted
Unmount was dissented by PID 0
MacBook-Air-6:~ alexandraverini$
What should I do now?
What happens if you run disk utility in recovery mode? Because it appears to me you are trying to erase the system disk while MacOS is running. That's not going to work.
What happens if you run disk utility in recovery mode? Because it appears to me you are trying to erase the system disk while MacOS is running. That's not going to work.
I don't know if this has anything to do with the problem, but my container disk looks like this:
Error unmounting disk
