Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!cs.utexas.edu!uunet!mcsun!ukc!warwick!bsrdp
From: bsrdp@warwick.ac.uk (Hylton Boothroyd)
Newsgroups: comp.sys.ibm.pc
Subject: System boot and INT 19
Keywords: system boot
Message-ID: <357@clover.warwick.ac.uk>
Date: 10 Jan 90 12:01:48 GMT
References: <945@excelan.COM> <77@qmsseq.imagen.com>
Organization: Warwick Business School
Lines: 16

In article <77@qmsseq.imagen.com> pipkins@qmsseq.UUCP (Jeff Pipkins) writes:
> The int 19h vector is supposed to do a warm boot.

I wonder how many of those who repeat these recipes have tried them.
The use of INT 19 is curiously under-documented even in the MSDOS
interrupt list.

In my current version of MSDOS (3.20), the MSDOS external command
PRINT.EXE is in fact a TSR which hooks INT 19 for its own purposes.  I
haven't traced through the use of INT 19, or traced whether it hands on
gracefully up the chain, but I do know that the warm-start recipes that
appear here every so often simply don't work for me.

It remains a mystery how to replicate the warm start effect of
Ctrl-Alt-Del.  [And I have worked through several of the likely things
in SIMTEL.]