You may hope to save something on a preferred path, location you usually access or well-organized place. But the copy command prompt you the designation drive doesn’t have enough space for the operation.
At this moment, you may urgently find out any files could be removed to get more free space.
FOLDER SIZE EXPLORER
Download it here: http://www.folder-size-explorer.com/download-folder-size-explorer.shtml
It can provides several visual forms, which presenting folder and sub-folder file size. It should be speed up your file removing action.