How to encrypt TXT file in Windows7 system?

1. First, prepare a format for jpg picture file, named 003.jpg, after, ready to need encryption processing TXT file, named Tina.txt. Put two files on a disk in the Win7 computer, take the G-disk example.

2. Do the above preparation work, at the same time press the Win7 computer keyboard win+r shortcut keys to open the computer's running window, then enter CMD and click Return, in the Open Command Prompt window, enter the command copy 003.jpg/b + tina.txt/a tina.jpg ( The specific command you need to be based on the picture name and TXT file name to replace it, after the completion, click Enter to determine, waiting for the computer to run the finished.