How to open DOS.......

1. Open Run window
2. Type "command" or "cmd
3. Click "OK" button.
 
 
(or)
 
 
 

Now Dos screen opens, that is as follows
now type cd \ and press enter.
Now you will get ' C ' prompt.
We may call it as 1) ' c ' prompt,  ( or) ' c' Drive.
2) mother prompt  (or) parent directory