thanks for the info on write protection pin available in usb controllers.
Then why no pendrive manufacturer give the wr protection switch in any of their models?( i mean an external switch , like a tab on older floppy discs)
AFAIK i have not seen any pendrive with the switch.( very earlier pendrives , some 32MB have a switch.)
A model without switch, helps virus writers .
If any of the members know any pendrive model with WR protect switch , please give their names.