From: "..." <yesss AT escape DOT com>
Message-Id: <199903081448.JAA11055@escape.com>
Subject: dr dos fdisk and ms dos
To: opendos AT delorie DOT com
Date: Mon, 8 Mar 1999 09:48:00 -0500 (EST)
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Reply-To: opendos AT delorie DOT com

Do DR DOS-FDISK'd drives support MS DOS software?
 
My laptop's 1gig DR DOS 7.02 FDISK'd hdd (particulars 
at the end of this msg) has a 4meg pre-DOS partition 
for Compaq setup and diagnostic firmware, and at the end 
a 386meg unused non-DOS partition for maybe-someday linux. 
In between are DOS logical drives C: to H:.
 
The drive has been troublefree till now. What's new 
is that MS DOS has joined the mix.
 
The setup/diags firmware I had was the wrong release 
for my system and I let that ride till I decided last week 
that I must install the win95 that has long sat unused 
in cab files on my hdd, expecting to dualboot DR DOS 
(my OS ever since DRI released DR DOS 5).
 
First I called Compaq and got the right setup and diagnostic 
firmware. I find that when invoked it self-boots under 
MS DOS 6 and when diags access drive C: they trash the 
partition. Would you believe, one 4.3 *billion*-byte file?
 
After reformatting the partition I tested the win95 
install bootup floppy with an AUTOEXEC.BAT that stops 
just short of starting setup. To my dismay, an MS DOS 
dir command too shows a scrambled C:. Interestingly, 
if I, e.g., set c:\swap as tmp the drive stays scrambled 
but if I reboot with DR DOS without doing anything to C: 
under MS DOS the drive is OK.
 
Help? ... Ciao.			 --Fisher
 
======================================= adpFisher <yesss AT escape DOT com> nyc
 
Drive Controller 1
	Hard Drive 1 . . . . . . . . .  Type  65 (1085.9 Megabyte)
	Model Number . . . . . . . . .  FUJITSU M2714T
	1:1 Interleave Supported . . .  No
	Cylinders  . . . . . . . . . .  526
	Heads  . . . . . . . . . . . .  64
	Sectors per Track  . . . . . .  63