Create A Undeletable And Unrenamable Folders In Windows In this tutorial you will learn cool and simple trick to Create an undeletable and unrenamable Folders In Windows operating system. Most of the Peoples are not aware that it is possible to create Undeletable, Unrenamable folder in windows without any software. To Test this concept just follow simple steps given below. Try to make a new folder in windows & give it name con,aux, lpt1, lpt2, lpt3 up to lpt9. you won't be allowed to create folder with above mentioned names, Because they are reserved words in windows. How To Create Undeletable And Unrenamable Folders ? Go to Start and then Click on Run Type cmd & hit enter (To open Command Prompt ). Remember you cannot create Undeletable & unrenamable folder in your root directory (i.e. where the windows is installed) That means you can't make this kind of folder in C: drive if you installed windows on C: Type D: or E: and hit enter Type md