How to make Folders unaccessable, undeleteable, unseachable by everyone ?

1. Open command prompt ( Press Win key+R, type “cmd” in the Run dialogue box and hit “Enter”).
2. Change to the directory where your folder is located.       cd <dir_name>
3. cacls <directory name> /e /p everyone:n
4. now your folder is protected by everyone 
5. To remove the restrictions, follow these step
6.  cacls <directory name> /e /p everyone:f
7. Now you can proceed in to folder.

Change Directory

Add caption

Enjoy :)