Remove virus from pendrive in DOS prompt

First thing u have to turn of the autoplay of your system.

after that
click "start"
"run"
"cmd"
hit enter
then go to ur pendrive using DOS
then type "attrib"
it shows the list of file names & attributes.
if it shows the attributes like "S H R"

then taht file contains virus.
to remove the virus----------
type
attrib -s -h -r
erase
then the virus is removed.

this trick is only used for pendrive
REMEMBER IT