Path: utzoo!utgpu!watserv1!watmath!att!att!bu.edu!rpi!zaphod.mps.ohio-state.edu!van-bc!ubc-cs!alberta!aunro!ersys!bking
From: ersys!bking@nro.cs.athabascau.ca (Barry King)
Newsgroups: comp.os.os2.misc
Subject: Re: Dual Boot for OS/2 1.2
Keywords: dual boot hpfs os/2 1.2
Message-ID: <3DF8s2w163w@ersys.uucp>
Date: 25 Nov 90 18:18:49 GMT
References: <kilmer.659023605@sysp1>
Organization: Edmonton Remote Systems, Edmonton, AB, Canada
Lines: 48


> Re: dual boot...
> 
> Make sure that DOS is on a FAT partition!  As far as I know, (or as far as my
> own experience goes), when you boot under DOS only, you cannot read the HPFS
> partition.  Thus, if DOS is on HPFS, I don't think she'll boot.
> 
> Please correct me if I'm wrong, OS/2 world.
> 
> Now, if you enter DOS through the compatiblity box, you can read the partitio
> which makes life kinda wierd.  You see, I have four partitions:
> (1) FAT
> (2) FAT
> (3) HPFS
> (4) FAT (this is where my DOS apps are)
> 
> What I ran into was that if I wanted to execute any DOS app from the compat. 
> 
> I would 'see' then 3'rd partition, but under a DOS boot, I wouldn't see it.
> 
> This plays hell with maintaining PATH, LIB, and INCLUDE environment variables
> 
> P.S. - I ended up making partition (4) HPFS, and (3) FAT.
> 
> Soooo, to be safe I'm making it rule to put DOS apps before the HPFS partitio
> I'm not sure if there's a better way...I'm sure there is.
> 
> See ya,
> Richard
> -- 
> .-------------------------------------------------------------------------.
> |  Richard Kilmer                           Kilmer@Opsnet-Pentagon.af.mil |
> |  VAX Systems Analyst                            (AKA Kilmer@26.24.0.26) |
> `-------------------------------------------------------------------------'
> --
> -------------------------------------------------------------------------.
> |  Richard Kilmer                           Kilmer@Opsnet-Pentagon.af.mil |
> |  VAX Systems Analyst                            (AKA Kilmer@26.24.0.26) |
> `-------------------------------------------------------------------------'

Actually, there isn't a better way to my knowledge.  DOS only recognizes 
partitions up to the first non-DOS partition.  Also, DOS will not boot 
from an HPFS partition because DOS only understands the FAT file 
system scheme.  In your first scenario, your 4th partition (FAT where the 
3rd was HPFS) would be invisible to your system when booted from DOS.
 
Too bad DOS didn't have a provision for an installable file system a la 
OS/2...