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From: zarifes@bnrmtv.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Re: Code to perform warm reboot.
Message-ID: <1441@bnrmtv.UUCP>
Date: Fri, 20-Feb-87 21:15:05 EST
Article-I.D.: bnrmtv.1441
Posted: Fri Feb 20 21:15:05 1987
Date-Received: Sat, 21-Feb-87 19:48:08 EST
References: <3258@j.cc.purdue.edu> <424@omepd>
Distribution: world
Organization: Bell Northern Research, Mtn. View, CA
Lines: 18

> In article <3258@j.cc.purdue.edu> tim@j.cc.purdue.edu (Timothy Lange) writes:
> >The following is Macro code to make an IBM PC and true compatibles
> >perform a warm reboot.
> > [...showing a simple assembler program to jump to F000:FFF0...]
> 
> There is a simple way to perform a real `warm' boot on an IBM PC. Just do
> an `INT 19H' instruction. This will reload MSDOS and restart the configuration
> process (reading CONFIG.SYS, executing AUTOEXEC.BAT etc.) without first doing
> the hardware checks. Believe me, it's faster.
 
There is a problem with this.  EVERY time I do an int 19h on my True Blue 
IBM AT,  the A: drive is spun and the system hangs completely.

I recommend that you do not ever use int 19h.

-- 

{hplabs,amdahl,3comvax}!bnrmtv!zarifes          --Ken Zarifes