SECURE FOLDER BY MAKING INACCESSIBLE AND UNDELETABLE.

Want to lock a folder without using any software / password in Windows,
Just follow the steps as given below :- 
Go to start> run> cmd
In command prompt,
Type:    cacls "path_of_folder" /E /P everyone:n
To regain access
Type:    cacls "path_of_folder" /E /P everyone:f

Note: Do not lock C:\ drive using this trick otherwise Windows will not boot next time.
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