Path: utzoo!attcan!uunet!cs.utexas.edu!rutgers!netnews.upenn.edu!vax1.cc.lehigh.edu!cert.sei.cmu.edu!krvw
From: dlo@questor.wimsey.bc.ca (David Lo)
Newsgroups: comp.virus
Subject: Cleaning up after infection (PC)
Message-ID: <0006.9007181522.AA17785@ubu.cert.sei.cmu.edu>
Date: 17 Jul 90 03:46:10 GMT
Sender: Virus Discussion List <VIRUS-L@LEHIIBM1>
Lines: 7
Approved: krvw@sei.cmu.edu

If something in the boot sector is different, then it certain doesn't hurt
to look through it.  However, your explaination of a SYS with another
version of DOS is possible.  It is also possible that a buggy program
wrote something into the boot sector.  If there are sensitive or
important data, back them up, put a clean DOS back on the hard disk,
and hope for the best.  The more you try to play with a possible virus,
the more likely it'll do some harm.