How to open AutoCAD without opening Drawing1

When opening an AutoCAD-based product, it opens a “Drawing1” file. - Solved

Use the STARTUP system variable to set the value of what you would like displayed when the program starts.

0	Starts a drawing without defined settings.
1	Displays the Startup or the Create New Drawing dialog box.
2	The Start tab is displayed. If available in the application, a custom dialog box is displayed.
3	The Start tab is displayed and the ribbon is pre-loaded when you open or create a new drawing.

If the FILEDIA system variable is set to 0, file dialog boxes are not displayed.