[comp.sys.att] Help with 3B2 Floppy Drive

taylor@qtp.ufl.edu (Charles Taylor) (03/07/90)

I've got a 3B2/300 running System V version 2 release 2.  and I'm having
trouble formatting floppy disks.  Sometimes the format just fails, says an
error (215?) occured and to consult the System Admin. Utilities Guide which
has no mention fo such an error.  Other times it seems to ger farther along
and dies with the message that it cannot verify track 0 sector 0.

I have tried both high density and double density floppies - it doesn't seem
to make much difference.

Can somebody tell me what is wrong and if my floppy drive has failed where
can I get a new one (can I stick a regular pc 360k or 1.2m floppy in there)
and how much should it cost.

                                           thanks in advance,

                                             Charlie Taylor
                                             taylor@qtp.ufl.edu

dave@westmark.UU.NET (Dave Levenson) (03/11/90)

In article <940@white.qtp.ufl.edu>, taylor@qtp.ufl.edu (Charles Taylor) writes:
> 
> I've got a 3B2/300 running System V version 2 release 2.  and I'm having
> trouble formatting floppy disks.  Sometimes the format just fails, says an
...
> I have tried both high density and double density floppies - it doesn't seem
> to make much difference.


The floppy drive on the 3B-2 is neither high density nor
double-density.  It's quad-density (720 kbytes).  That kind of media
is about as frequently-found as a 3B-2 computer outside of AT&T, but
that's what they use!

-- 
Dave Levenson			Voice: (201 | 908) 647 0900
Westmark, Inc.			Internet: dave@westmark.uu.net
Warren, NJ, USA			UUCP: {uunet | rutgers | att}!westmark!dave
[The Man in the Mooney]		AT&T Mail: !westmark!dave

hoffman@speedy.cs.pitt.edu (Bob Hoffman) (03/15/90)

In article <721@westmark.UU.NET> dave@westmark.UU.NET (Dave Levenson) writes:
>The floppy drive on the 3B-2 is neither high density nor
>double-density.  It's quad-density (720 kbytes).  That kind of media
>is about as frequently-found as a 3B-2 computer outside of AT&T, but
>that's what they use!

To be more specific, you want to get a diskette rated for "Double
Side, Double Density, 96 Tracks per Inch".  The Maxell part number
is MD2-DD.  To summarize:

Diskette description			Mfr/Part No.	Typical Use
--------------------			------------	-----------
Double Side, Double Dens, 48TPI		Maxell MD2-D	IBM PC 360K
Double Side, Double Dens, 96TPI		Maxell MD2-DD	AT&T 3B2
Double Side, High Dens, 96TPI		Maxell MD2-HD	IBM PC/AT 1.2M

	---Bob.

--
Bob Hoffman, N3CVL       {allegra, bellcore, cadre, idis, psuvax1}!pitt!hoffman
Pitt Computer Science    hoffman@cs.pitt.edu