Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!cica!tut.cis.ohio-state.edu!bloom-beacon!eru!luth!sunic!mcsun!hp4nl!eutrc3!wsinrn
From: wsinrn@eutrc3.urc.tue.nl (Rob J. Nauta)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Problems with sys
Summary: Don't do it the hard way!
Keywords: upgrade sys hidden files
Message-ID: <1221@eutrc3.urc.tue.nl>
Date: 24 Oct 89 23:26:52 GMT
References: <4495@mentor.cc.purdue.edu> <20028@unix.cis.pitt.edu> <80@nesac2.att.com>
Organization: Eindhoven University of Technology, The Netherlands
Lines: 15

Upgrading dos with sys is never easy. Sometimes the files have different
names (io.sys, msdos.sys vs ibmbio.sys, ibmdos.sys), or different sizes.
You don't have to back up, format and restore, or edit the fat by hand,
however.
- Delete the volume label, just in case  
- Delete the 2 hidden files (but keep a boot-floppy of both versions)
- Use the norton utilities to make a disk bootable, there is a way to
  transfer the new version to a disk, where files that are in the way will
  be moved
 
You don't have to follow these steps, the normal way works too, but make
sure you have booted the NEW version, and are using the NEW sys program,
booting from the hd and using the old sys won't work/...

Rob