Lock Folders Without Any Software

Actually, there is no need to use the HIDE FOLDERS softwares, when one can lock the folders without any software, just by using some practical knowledge about computers. We'll tell you how.
Suppose you want to lock the folder 'Movies' in D drive. The folder has the following path: D:\movies.
In the same drive, create a text file and type in it:

ren movies movies.{21EC2020-3AEA-1069-A2DD-08002B30309D}
Note: Type the above content as it is shown.
Now save this text file as lock.bat

Create another text file in the same drive, and type in it:

ren movies.{21EC2020-3AEA-1069-A2DD-08002B30309D} movies
Note: Type the above content as it is shown.
Now save this text file as key.bat
Double-click on lock.bat and the folder 'Movies' will change to Control Panel and no one can view its contents.
Double-click key.bat and you will get back your original folder.