About Autorun.inf
Autorun.inf is a file programmed to initiate build-in services of a system automatically so that Windows would give out the desktop to PC users and respond to the strikes made on the keyboard. Also, it is employed by many other programs/ devices including memory stick, CD-ROM to run themselves automatically upon double click for a real-time provision of all-rounded services.
Since it loads information on installed programs or devices that connect to computer, virus makers start to target it for vicious infiltration without being easily detected and deleted. And such situation when autorun.inf being exploited happens on memory stick or CD-ROM mostly. Since autorun.inf is taken by Windows to be system file, error messages would come up when the removal of it is implemented to guarantee that no service will become dysfunctional.
