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From: PEPRBV%CFAAMP.BITNET@IBM1.CC.Lehigh.Edu (Bob Babcock)
Newsgroups: comp.virus
Subject: Re: Is this a virus? (PC)
Message-ID: <0005.8909051137.AA16953@ge.sei.cmu.edu>
Date: 5 Sep 89 13:40:31 GMT
Sender: Virus Discussion List <VIRUS-L@IBM1.CC.Lehigh.EDU>
Lines: 12
Approved: krvw@sei.cmu.edu

>When I copy some
>files to a floppy but I misput a write protected diskette, I find the
>error massage "retry, ...". At this time, if I answer "r" to the
>massage and puting a non-protected diskette, then the FAT and
>DIRECTORY of the protected diskette is transfered to the second non
>protected diskette(and the files that I copied to). Is this a DOS's
>bug or a virus?

This is a known behavior of MS-DOS.  The directory and FAT have
already been read before the write protect error is sensed, and
when you say retry, DOS doesn't know that you have changed disks,
so it doesn't reread the directory info.