How to Open DOS
         Using the Run Command
         You can quickly open the DOS command prompt using the Run dialog:
                      - Press Windows + R on your keyboard.
- Type cmdin the Run box.
- Press Enter, and the command prompt will open.
Using the Start Menu
         You can also open DOS through the Start menu:
                      - Click on the Start button.
- Type cmdin the search box.
- Click on Command Prompt from the search results.
Using Windows Explorer
         You can open DOS from any folder in Windows Explorer:
                      - Open any folder in Windows Explorer.
- Hold Shift and right-click inside the folder.
- Select Open command window here.