locking Folders without any third party software

Locking Folders without any third party software
Hi guys<<<< Back with a interesting trick>>>>>>>>
There are some folders in the computer which contain some imp. information,,,,, so here is the trick to lock these folders without any software...
Consider you want to lock a folder named in your E:\, whose path is E:\.
Now open the Notepad and type the following
ren .{21EC2020-3AEA-1069-A2DD-08002B30309D}
Where is your folder name. Save the text file as loc.bat in the same drive.
Open another new notepad text file and type the following
ren .{21EC2020-3AEA-1069-A2DD-08002B30309D}
Save the text file as key.bat in the same drive.
Steps to lock the folder:
To lock the folder, simply click the loc.bat and it will transform into control panel icon which is inaccessible.
To unlock the folder click thekey.bat file. Thus the folder will be unlocked and the contents are accessible
PS: