Patent ID: 7562089

Claim:
A portable storage device configured to communicate with an appliance, the portable storage device comprising: a processor; and storage device memory that includes a file management system executable by the processor to generate new file management information pertinent to files when the files are first stored in said memory, to store the new file management information in said memory, and to modify existing file management information already stored in said memory responsive to a file for which the existing file management information being modified by the appliance; wherein the file management information is stored in the storage device memory and comprises detailed information regarding manipulation of the file including: a first date value indicative of when the file was created in a first location of the storage device memory, a second date value indicative of when the file was moved from the first location to a second location in the storage device memory without further modification to said file, whether and when the file was edited, whether and when the file was deleted.