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Mail Archives: djgpp/2004/06/23/10:30:34

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From: Andrew <no AT no DOT no>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: DDJGPP+ RHIDE: 3 question
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Date: Wed, 23 Jun 2004 14:15:39 GMT
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

On Wed, 23 Jun 2004 17:29:58 +1200, Paul Wilkins
<disk AT paradise DOT net DOT nz> wrote:

[snip]

>Both cmd.exe and command.com look exactly the same, even down to having 
>the same vesion number with the VER command.

Figured I may as well point out that command.com and cmd.exe on NT
(2K/XP) systems are *not* exactly the same.  command.com, in case you
hadn't noticed, starts the NTVDM as well, whereas cmd.exe does not.
The NTVDM is, as you may already know, the Windows NT Virtual DOS
Machine.  Contrary to what you might believe, things are subtly (and
in some cases not so subtly) different when running the 16-bit
real-mode command.com and the 32-bit Windows cmd.exe console program.
Believing that they are merely the same program with a different name
is something that may, at some point, turn around and bite you in the
posterior.

-- 
Andrew

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