Jeff Hellige wrote:
I have some
rather old MO disks as well, but they are made by Sony and are for
a 5 1/4" Magneto Optical Disk drive - an S501. They are very close
to 290 MBytes
on each side and are formatted for 512 bytes per sector.
If I recall
correctly, one of the problems with the MO drives
was that there was little to no standardization of the formats or
disks for the drives. I've got an old Pinnacle MO drive stashed away
somewhere but no longer recall it's capacity.
Jerome Fine replies:
Pinnacle sold an OEM drive (the one made by Sony) packaged in their
own box. The original Sony SMO S501 consisted on two components -
a C501 controller (which was the interface between the host adapter and
the actual drive) and the actual D501 drive (which in its original form was
a modified ESDI configuration - I don't know if an actual ESDI hard drive
could be substituted for the D501 drive) in addition to the external box
with a power supply for one drive and controller.
Pinnacle called their drive the REO-650 and in a dual configuration it
was called an REO-1300. Since I also have an REO-650 and have
looked inside, I can verify that on the early models, this was the actual
hardware. Obviously, both the S501 and the REO-650 use the
AGAIN, ONCE MORE, does anyone want some disks? The drive interface is
standard SCSI with a 50 pin centronics interface, although the internal
C501 board uses just a standard 50 pin header.