I am trying to move a large (100GB+) folder from the Desktop, into a subfolder on the Desktop. When I drag and Drop, it invokes a Copy, and I do not want to wait an hour while it goes through with this (I will need to do several such moves). I have read that holding CMD while drag-dropping will invoke Move, but it does not. If I wait for a folder to finish the alleged "Move" operation, it turns out to be a Copy, with the original folder left behind.
Interestingly, if I attempt to Move (drag/drop) a smaller folder, it does so without issue. What am I doing wrong?