Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!mcsun!hp4nl!star.cs.vu.nl!msschaa
From: msschaa@cs.vu.nl (Schaap MS)
Newsgroups: comp.sys.ibm.pc
Subject: Re: distinguishing between MS and IBM(PC) DOS
Keywords: Microsoft C
Message-ID: <5134@solo6.cs.vu.nl>
Date: 18 Jan 90 16:53:46 GMT
References: <6178@uhccux.uhcc.hawaii.edu>
Organization: Fac. Wiskunde & Informatica, VU, Amsterdam
Lines: 14

In article <6178@uhccux.uhcc.hawaii.edu> todd@uhccux.uhcc.hawaii.edu (Todd Ogasawara) writes:
>Does anyone know how to determine whether the current DOS running is MS-DOS
>(from Microsoft and used on clones) or IBM-DOS (aka PC-DOS from IBM and
>used on true blue boxes) from within a Microsoft C program?
>
>I know how to determine the version number but do not know how to determine
>origin... Thanks...todd
>

Check the root directory of the boot disk for
IBMBIO.COM and IBMDOS.COM for PC-DOS,
or MSDOS.SYS and ???.SYS for MS-DOS.

Michael