Sometimes,pen drive can not be formatted in virus affected computer. But using a technique we can format the pen drive even in virus affected computer .The process is:
◙ Go to, start►control panel and double click on the administrative tools. After that , double click on the computer management. Now click on the disk management which is in left side.After clicking on disk management, it’s right side will show a list of drives with pen drive.Now keep your mouse on the pen drive and make a right click.Now,format the pen drive by clicking on format.