*BSD News Article 6697


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Newsgroups: comp.unix.bsd
Path: sserve!manuel.anu.edu.au!munnari.oz.au!uunet!wupost!spool.mu.edu!agate!iat.holonet.net!psinntp!psinntp!fstalb!mooreb
From: mooreb@fac.com (Brian Moore)
Subject: Re: DOS and 386BSD (and NT and OS2)
Organization: First Albany Corp.
Date: Fri, 16 Oct 1992 18:40:32 GMT
Message-ID: <1992Oct16.184032.29680@fac.com>
References: <92288.123610K390670@ALIJKU11.BITNET> <1992Oct15.025722.15943@fcom.cc.utah.edu>
Lines: 43

In article <1992Oct15.025722.15943@fcom.cc.utah.edu> terry@cs.weber.edu (A Wizard of Earth C) writes:
>I was hoping to avoid the level of detail required to install two OS's on an
>IDE drive by shooting at the two most likely suspects... sorry this didn't
>work for you.
>
>In article <92288.123610K390670@ALIJKU11.BITNET>, <K390670@ALIJKU11.BITNET> writes:
>|> In article <92286.101837K390670@ALIJKU11.BITNET> I write:
>|> 
>|> >My machine is a 486-50 with 212MB Conner CP3204F (IDE) and 543MB Conner
>|> >CP3540 (SCSI-2), the latter of which is connected to an Adaptec 1542B.
>|> >
.... Lots of stuff deleted ...

I recently purchased the same 212MB Conner drive and got it working with
DOS first and real partitioning fairly easily.  Here goes my description,
feel free to tell me that my setup can't possibly work, or thank me for
posting a working solution...

First, I called Conner tech support early on and asked them about using
the full drive with DOS.  They said to use half the cylinders and double
the heads, giving C683, H16, S38.  They also said I should set the Landing
Zone (I believe) to 683, which they assured me was the proper thing to do
for this CONNER IDE drive.  I set this up in CMOS and fdisk was happy with
it.  I created a 15MB DOS partition (I don't recall the exact cylinder
boundries, but I'll try to remember to post them tonight).

Next, I used a trick I saw posted here a while ago... It said to install
386bsd normally with dist.fs, then install with fixit.fs and modify the
disklabel already in place.  [Terry, you might want to put this tip in
the FAQ].  I did this to get a 15 MB swap partition, and it works like a
charm.  I didn't need to modify any boot code at all.  Again, I'll post
my disklabel if I remember.  It could be that I just got lucky and used
an even number of cylinders for DOS, so 386bsd fell on a physical
cylinder boundry.  I had a minor problem in that I had to edit my
/etc/fstab, but it works now.

Finally, I installed os-bs to let me select which partition boots.
Partition info will be forthcoming tonight or tomorrow.
-- 
Brian Moore, mooreb@fac.com | "Buddha once sat before a wall, and when he
Unix System Administrator   | arose he was enlightened." / "You compare
First Albany Corporation    | yourself to Buddha?" / "No, only to the wall."
standard disclaimers apply  |                               - Circle of Iron