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Article #16962

Re: OS/2 need help for disk > 512kb

#16962
From: Jerry Pedone
Date: Sun, 29 Dec 1996 00:00
50 lines
2709 bytes
In <5lowycBTKgzM089yn@ibm.net>, parker0@ibm.net (Paul Parker) writes:
>In article <32BF93E0.2229@multitask.com.au>,
>dIon Gillard <dion@multitask.com.au> wrote:
>>Pearson Cresswell wrote:
>>> Note that is in any case necessary to have DOS/FAT partitions at the beginning
>>> of the disk as DOS can't see the HPFS partitions.
>>Not if you're using a recent version of DOS - it will then ignore the
>>HPFS drive, and
>>access any other FAT Drives after it - which introduces drive/file
>>naming hassles,
>>but it does work.
>
>
>How recent a version of Dos ?
>
>
>
>My cd44-y70 Aptiva 486dx-50mhz [S/N: 9008794]  came with 270mb 
>hard drive which I soon filled.  When I soon sort another HD installed, 
>was looking for *Gb, however heard there was a limit to the 531,024 HD 
>it says is there now.
>
>
>Does this limit actually exist for my pc, or, was it yet another of lifes 
>examples that left hand does not always know what right does :-(
>
>
>
>As looking to soon install another HD - if cannot $ another pc, I look 
>forward to this and any related information with interest.
>

From what I've read the "unseeable" drives will also get remapped by the
controlling OS so it's better to put them at the end to avoid problems.  Plus
that has the added bonus of keeping your drive letters the same for all
OSs.
  As far as a 512 (or 528 depending on where you read it) limit, this can
be overcome by OS/2 as well as DOS.  The limitation is placed by the
BIOS not the OS.  For DOS you can normally get drivers with the drive you buy
that will extend this limit (like ontrack), for OS/2 - the OS just ignores the 
BIOS and goes on.  The problem comes in when you want to use bootmanager. 
 With boot manager you can't use the DOS driver so your DOS session will not 
see beyond the 512 (or 528) MB limit.

j.

jpedone@worldnet.att.net
http://www.geocities.com/heartland/8502
Team OS/2 - Once you try it you'll never leave !
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From: jpedone@worldnet.att.net     (Jerry Pedone)
Subject: Re: OS/2 need help for disk > 512kb
Date: 1996/12/29
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