To Lock your Folder
If u want to lock Folder "test" in directory "class" then the path is :
EMay be Differ)\...\class\test
Then First go in "class" directory and make a notepad file and writedown following code:
cacls test /d USERNAME
Where USERNAME is the Name that u have selected for your account in your Computer.Then save & close it.
Now,Rename it with "Lock.bat".
Now,Run that Lock.bat file & it will ask for it there give y (yes) & it's done.
To Unlock your Folder
To Unlock Folder make another Notepad File and write following code:
cacls test /g USERNAME:f
Then save & close it.Rename it with "open.bat".
Now,Run the Open.bat file & give y(yes) for Unlock it.