antivirus for usb flash disk

flash disk is just USB device. You can send data to it or request data
thereof. Hence, it is not possible to have acted as an independent
computer when linked to your PC. To do this, you will need
able to run separately (in a manner that corresponds to the start of a client
PC, then connecting to a server).
Some USB flash drives have a read / write tab as diskettes and
useful for the implementation independent scanning software from one computer to
another. But a scanning machine that May already be infected is not a
reliable process. The malicious software will probably be able to block or
fold, the scan.
Actually, you need a type that you begin to scan properly.
It is a way to make USB devices bootable user Motto Hairu, although I
never tried. I have successfully used Motto Hairu access to a USB flash
a DOS startup disk. You must play with the settings and Footer
and although I would not recommend it if it was not really the only option
left.