RF>  > RC> No.  The DIR command simply _reads_ the disk.
RF>
RF>  > OK, but what type is those viruses that gets active when you execute a
RF>  > command such as DIR A:  I know that there is some viruses that works
RF>  > like that.
RF>
RF> Such viruses don't exist.  They're an urban myth ... like email viruses
RF> and alligators living in the New York sewers,
RF>
RF> As Rick said, the DIR command _reads_ the disk.  It can _read_ virus
RF> code into the DOS buffer where some antivirus programs will detect it
RF> and warn you that it's there ... but there is no way this code can
RF> escape and "do" anything.
Well, OK, they are just fantasy.
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