Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!zaphod.mps.ohio-state.edu!tut.cis.ohio-state.edu!pt.cs.cmu.edu!b.gp.cs.cmu.edu!Ralf.Brown@B.GP.CS.CMU.EDU
From: Ralf.Brown@B.GP.CS.CMU.EDU
Newsgroups: comp.sys.ibm.pc
Subject: Re: Files opened at the same time under Desqview
Message-ID: <2583ad48@ralf>
Date: 11 Dec 89 12:36:08 GMT
Sender: ralf@b.gp.cs.cmu.edu
Organization: Carnegie Mellon University School of Computer Science
Lines: 31
In-Reply-To: <1035@oneb.UUCP>

In article <1035@oneb.UUCP>, kmcvay@oneb.UUCP (Ken McVay) wrote:
 >In article <1500@rodan.acs.syr.edu>, cwebster@rodan.acs.syr.edu (Chris Webster) writes:
 >> 
 >> I run Desqview 2.2 on an AT clone.  Something has been pestering me for a 
 >> while now about DV: How does it handle files that are opened by different
 >> applications at the same time?
 >
 >If memory serves correctly, it doesn't. If you change a file in partition "A"
 >and then access it from "B" you can expect FAT problems - think about it.

That's why you should run SHARE before starting DV.  SHARE will handle record
and file locking.  However, you won't get FAT problems, since the second
partition doesn't get a time-slice until the first finishes its DOS call, and
DOS updates the FAT before returning.  Scrambling the file is quite possible,
however (it's happened to me more than once).

 >For that reason, I found it politic to bring DV down once a day (see 
 >previous message about running dual FD/Opus BBS systems) for maintenance -

Me too.  My tape backup will run under DV so long as it's the only window, but
it works somewhat better outside DV (the verify has to reread lots of blocks
under DV because it missed them as they were whizzing by).

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