Create an Undeletable folder (Windows)

Process:

1.Start
2.Run
3.Type "cmd"

Now you are in DOS PROMPT

Navigate to The Drive where you wanna create your Folder.
For example if you wanna create a folder in D:/ Type "D:" ( without quotes")

4. Type "md \aux\\" without quotes marks and hit enter. ( without quotes")
A Folder named "aux" will be created there.

Your Folder is created. Try to delete it. A common computer user can not delete it. IF you wanna delete it.
Again Go to DOS PROMPT .

Type: Type "rd \aux\\" and press Enter. The folder Will be delete