If you want to quickly open the disk folder containing your current AutoCAD drawing, right-click on its tab and choose “Open File Location” from the context menu. The folder will open in Windows Explorer.

This option is inactive (grayed) for not-yet-saved drawings.

In older AutoCAD versions, or if you have drawing tabs hidden, you can add the following LISP macro to your ribbon for a similar functionality:

(command “_START” (getvar “DWGPREFIX”))