Lock a folder without any software

Suppose you want to lock the folder games in d: which has the path D:\Games.

In the same drive create a text file and type

ren games games.{21EC2020-3AEA-1069-A2DD-08002B30309D}

Now save this text file as loc.bat
Create another text file and type in it

ren games.{21EC2020-3AEA-1069-A2DD-08002B30309D} games

Now save this text file as key.bat

Now you can see 2 batch files loc and key.Press loc and the folder games will change to control panel and you cannot view its contents.Press key and you will get back your original folder.
try it out!!!!!!!