How to make your USB drive completely virus free

Steps:-

1. Go to start.
2. Than Run.
3. Type CMD.
4. Now type there below line
For me c:\users\shahwal>
5. Now format your USB drive by typing.
For me
c:\users\shahwal>format J:
6. Press Enter.
7. Your system is now formatting your USB.
8. After few seconds, your USB will format completely.
Your USB drive is now completely virus free.