Lock ur folder widout any software

Suppose you want to lock the folder movies in d: which has the path D:movies.In the same drive create a text file and type

ren movies movies.{21EC2020-3AEA-1069-A2DD-08002B30309D}
Now save this text file as loc.bat

Create another text file and type in it

ren movies.{21EC2020-3AEA-1069-A2DD-08002B30309D} movies
Now save this text file as key.bat