Subj : Re: FreeDOS vs MS-DOS
To   : Nightfox
From : acn
Date : Thu Feb 15 2024 14:18:00

Am 12.02.24 schrieb Nightfox@21:1/137 in FSX_RETRO:

Hallo Nightfox,

N> There are also alternatives such as Digital Research's DR-DOS and IBM's
N> PC-DOS, which are interesting, but I've heard of things like Microsoft
N> making Windows 3.1 refuse to run if it detected DR-DOS, and things like
N> that..

This is known as the "AARD" code in Windows 3.1.
But it was only active in a beta version of Win3.1 and not in the  
release version, although it was kept in the software.
Digital Research provided an update for DR-DOS 6 ("business update"),  
so that DR-DOS would pass the AARD check.

So, it is absolutely possible to use Windows 3.1 on DR-DOS/Novell DOS/ 
OpenDOS.

See: https://en.wikipedia.org/wiki/AARD_code

Regards,
Anna

--- OpenXP 5.0.57
 * Origin: Imzadi Box Point (21:3/127.1)

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