If u want hide or lock any folder without any software just go through the given step……..
1.> Open the Command Prompt (search as cmd).
2.> Type the drive name where your folder has stored.
e.g:- e:
And give colon and press enter.
3.> Now your perticular drive has opened.
4.> Type the code
attrib +a +r +s +h foldername
5.> For reopen ur folder just follow same process and the code is …
attrib -a -r -s -h foldername.
Note:- Once you hide ur folder it’ll permanently hide.
If any one search the folder will not allocated.