How to make undeletable folder in windows.

if we r going to make con name folder normally by click on new folder and then we give it name con then its name automatically changes to new folder...........
if u want to make con name folder then u have to go to command prmopt...
1.click on start
2.click on run and type command or cmd then enter,command prompt will ope.
now if we want to make folder in e drive then type

c:\>md\\.\e:\con

Now you are not able to delete  this folder directoly u have to delete it in command prompt...
 you have tp type

c:\>rd\\.\e:\con


thnx...............