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Mail Archives: opendos/2000/03/15/03:00:22

Message-Id: <3.0.6.16.20000314220940.2e17451c@mail.highfiber.com>
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Date: Tue, 14 Mar 2000 22:09:40
To: opendos AT delorie DOT com
From: Charles Dye <raster AT highfiber DOT com>
Subject: Re: Dual boot DR DOS and Win95
In-Reply-To: <484DA0D0BC1@reze-1.rz.rwth-aachen.de>
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At 05:05 PM 3/14/00 +0100, you wrote:
>On Thu, 09 Mar 2000 19:55:43 Charles Dye wrote:
>
>> Here's how I set up my system at work:
>> 
>> 1)  Boot from an MS-DOS 5 or 6 floppy.  Create boot partition using
>>     FDISK.  Reboot and format it.  Use MS-DOS 5 or 6 because the Win95
>>     FDISK can create partitions which DR DOS can't access (yes, even
>>     FAT16) and the DR DOS version of FDISK is just plain buggy.
>
>BTW, these problems are long fixed with my personal issues of FDISK, 
>FORMAT, and SYS. 
>
>It is actually nothing more than switching back the OEM label 
>xxxxxyyy to "IBM  3.3" instead of "DRDOS 7". Of course, you 
>can do the same using DISKEDIT or DEBUG. This also fixes serious 
>OS/2 problems to access DR-DOS partitions.

As I recall, there were actually two issues with FDISK:  it created
clusters larger than needed (that is, too few clusters) plus the
unrecognized OEM label.  Neither problem was terribly significant
by itself; it was the interaction between the two that caused possibly
disastrous problems under MS-DOS.

My guess is that a copy of FDISK patched in this fashion would avoid
the worst incompatibility problems, but would still result in wasted
space on small hard drives -- say, less than 128 megs.  And of course
patching the OEM label on the drive itself won't fix the cluster size.

raster AT highfiber DOT com


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