DSQD Drives (Was: RE: Diags/Boot image for Altos 580)

From: Don Maslin <donm_at_cts.com>
Date: Sun Mar 17 15:52:02 2002

On Sun, 17 Mar 2002, Douglas Quebbeman wrote:

> > I just took a look at the docs for the Series 5 Altos computers and
> > there is a repair ticket for a Mitsubishi M4853 Disk Drive. The floppy
> > disk summary docs indicate that drive is a 5.25, HH, 720K, 96
> > TPI drive.
>
> Ok, not GCR, but I suppose similiar to drives used
> in the Sanyo MB550 (or whatever that silver incompatible
> was called).

Doug, it is a pretty conventional CP/M format. The disk definition is
in the list from 22Disk.

                                                 - don

> > The CP/M version with my Altos 580 is 2.2 Licensed from Digital Research
> > by Lambda Software (4 disks.) Each of the six disks I have are labeled
> > double sided, double density, soft sectored. Of the two other disks, one
> > is for the 580-20 and is labeled MPM/CPM for Altos 580-20, the other
> > Altos Diags for model 580-x.
> >
> > Hope this helps!
>
> Can you make copies for Doc?
>
> Regards,
> -doug q
>
>
> >
> > Douglas Quebbeman wrote:
> > >
> > > > IIRC the Floppy on an Altos 580 is DSQD.
> > >
> > > Am I correct that while different from standard
> > > DSDD, they are *not* GCR drives?
> > >
> > > What other machines might carry these drives, can I
> > > hook one up to a standard PC controller in a box
> > > running DOS, and then duplicate the disks?
> > >
> > > > I had one that had the CMI hard drive replaced with a
> > Seagate ST225. So I
> > > > know they will take similar configured Hard Drives. I
> > think they will take
> > > > 10, 15 and 20 Meg HDs.
> > >
> > > This is good to know, ST225s still pop up from time to time...
> > >
> > > -dq
> >
>
Received on Sun Mar 17 2002 - 15:52:02 GMT