How to remove virus from your pen drive without any software and also without formatting the pen drive.
Start->Run->Cmd & Press enter
C:\users\User Name > attrib-h-r-s / s / d g: \ *. *
now press enter.
Note: g: - drive letter
The code is for those computer where pen drive shown a G drive,
If your PC shows pendrive with some other letter like I/H. then just past the I/H letter in place of g in the code.
(attrib-h-r-s / s / d h: \ *. * or attrib-h-r-s / s / d i: \ *. * )