1. Open Command Prompt

Start–> Run–> type cmd

2. Go to the location where your file to be hidden by using standard DOS commands ( u can view all the commands by typing “help” in the CMD window). Here we just need “cd” command + the location you want to go.

3.Place any picture in the same location .

4.Now in the Command Prompt windows type

copy /b “picture.extension” + “your file.extension”  “any filename.jpg”

5. Now if u want to view the file hidden,use WinRAR to open the jpg file and extract to any location or double click on the file.