The identification information about unnecessary files is registered to generate an unnecessary-file database. The identification information about files stored on a plurality of storage devices connected to a host computer is acquired to judge with the unnecessary-file database whether the identification...http://www.google.fr/patents/US7904426?utm_source=gb-gplus-shareBrevet US7904426 - System and method for identifying a removable storage device
System and method for identifying a removable storage device
