How to lock folder without using any software ?

You can lock any folder using software and without using any software.These are the steps to lock the folder without using any software.

(1) Consider that you have a folder named "Album" in E:\songs

(2) In the same drive (here E:\) create a new notepad file and paste this code in the notepad file ren songs songs.{21EC2020-3AEA-1069-A2DD-08002B30309D}.
Save this file as lock.bat or any other file name with ".bat" extension.

(3) Then Create another notepad file and paste this code in that file
ren songs.{21EC2020-3AEA-1069-A2DD-08002B30309D} songs
Save this file as key.bat or with other file name with ".bat" extension.

(4) Now you have two batch files. To lock your folder (Album),double click lock.bat and your folder will change into Control Panel and you will not be able to see the content of the folder.

(5) If you want to open the folder(Album) then double click key.bat and you will be able to see the content of the folder.

If you want more security than keep the key.bat in another location.For unlocking the folder copy paste key.bat to the original location and double click on it.

note: here i have given example of folder with name songs.you have to replace the code i have given with the folder which you like to lock.