How to make an undeletable folder and how to delete it

1) open command prompt 2) Type in directory (harddisk) notation where you want to make this folder e.g E: or D: or C: , press enter 3)Type md \lpt1\\ and press enter, the folder will now be created in your E: or c: or D: drive (don't use quotations while entering folder name n use required space wherever u see it in given image) ALL DONE 4)If you try to delete or rename it, it will appear error message since i have given procedure to make undeletable folder , it's my duty to provide it's solution also.. How to delete undeletable folder? 1) Just go to command prompt again , type the directory notation where folder is made and press enter. 2) type rd \lpt1\\ press enter. NOTE:- ANY MISTAKE IN TYPING SYNTAX WILL GIVE ERROR n TRICK WONT WORK!!!!!!