Hide/Lock Folders & Files Without Any Help Of Software Using CMD.

1) On command prompt.
2) Go to the pace where the folder you want to Hide.
3) Example i want to hide a folder called "tools", its located in the d:\
4) Type  following command in cmd to hide folder.

     D:\>attrib +s +h +r tools

5) Type  following command in cmd to un-hide folder.

     D:\>attrib -s -h -r tools

Note:

1) +h = to hide the folder
2) +s = to list it as system file - so the hidden will be protected by system.
3) +r = to make the files as read-only.