[comp.sys.ibm.pc] Need help with 1.44 Meg floppy drive

leo@dduck.ctt.bellcore.com (Leo Zvenyatsky) (11/01/89)

Sorry to bring this up again.  I know that this has already been
discussed at length, but I seem to have discarded all the info.

I am having problems with configuration of a 1.44 Meg floppy by TEAC.

Here is the problem:


I have just added a 3.5 inch 1.44 Meg floppy to my system (which has
been functioning fine), and now when I use normal DOS utilities such as
COPY, XCOPY or other utilities such as XTREE I consistently get an
error message when accessing the 1.44 Meg floppy:

	Sector not found error reading drive F 
	Abort, Retry, Fail?

Chkdsk, Dir, Norton's NU and NDD and FastBack Plus all work fine and
never complain.

I have tried numerous variants in CONFIG.SYS with the same results.

Currently, the CONFIG.SYS contains the following line:

	DEVICE=DRIVER.SYS /D:1 /T:80 /S:18 /H:2 /F:7

I have tried PC-DOS 3.30 and 4.01 and MS-DOS 3.30 all with the same
results.

I used the Advanced AT Diagnostics 2.01 to configure the system.  Since
it does not know anything about 3.5 inch floppies, I told it that the
drive (physically drive B:) was a 1.2 Meg floppy.

As of this posting i have the following configuration:

	AT compatible 6/10 MHz 1 Meg RAM
	Phoenix 3.10 BIOS
	WD 1006V-MM2 controller
	Seagate ST-251-4
	1.2 Meg TEAC floppy
	PC-DOS 3.30 (same results with MS-DOS 3.30)


I don't know where the problem lies: in SETUP, DRIVER, CONTROLLER, or
BIOS (or a combination of the above).

Any help will be appreciated.

Please respond via e-mail.
   _           ___	| If any views or opinions are found
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 /    _  __     /	|          Leo Zvenyatsky
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tbowser@clmqt.marquette.Mi.US (Strikemaster) (11/02/89)

   Have had the same fun 'n games when I built my own AT clone. For me, it
turned out that the sensor in the Toshiba drive I finally settled with
cannot read the indent style 1.44 floppies (there is an indent, rather than
a second window through the floppy; Memorex 2S/4D's are a fast example). When I  
finally purchased some of the double-windowed disks, the problem with
Sector Not Found errors went away. It seems that most AT clone BIOS do not
handle the 1.44 drives properly. I have set up a couple of Format batch
files to handle the switches necessary when formatting for 720 3 1/2"s and
360k 5 1/4" in the high density drives.

   I do not use any drivers for the 3 1/2, just normal BIOS handlers. The
motherboard/drive controller combo here is the AST Xformer 286 w/ 1 meg
memory and the Western Digital WD1003-SR2 RLL/floppy. The AST diagnostics
keep telling me the 3 1/2" drive is a 1.2meg, but the BIOS entry is for
1.44 meg. I just live with it and work around the dain-bramaged thing.

tbowser@clmqt.marquette.Mi.US (Strikemaster) (11/03/89)

   Just to add: certain programs will alter the environment when you shell
out of them. Just had an attack of the "drive stupids" when I shelled out
from my telecomm program. Warm restart cleared the brain drain, now it
works fine.

   IBM Clone <> IBM. Even IBM <> IBM. There is no such thing as a 100%
clone of IBM PC. This from a clone builder/scrounger/hobbyist/madman.
 
-- 
 Tim Bowser  ("Strikemaster")  |  Standard  | rutgers!sharkey!clmqt!tbowser
Enterprise Information Systems | Disclaimer |      tbowser@clmqt.UUCP
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