55srwlgs@SACEMNET.AF.MIL ("55SRWLGS") (12/14/90)
From: 2035CSXP "John Stepek, Sgt, AV. 347-4567" 12-DEC-1990 21:07:10.64
Subj: Your diskettes...
Frank,
The diskettes you have in your hand are HARD sectored disks. If you look
at the index hole and spin the disk in the sleave you'll notice a whole every
half inch or so. Those disks are ment to be used on the old disk drives in
the CPT word processors. On the IBM compatible machines they use soft-sectored
disks. Only one index hole is one them. High or low density disk all have one
index hole. They can't be used in any IBM machine. We had a slew of them in
our supply system for the longest time before I finally went over and showed
them that they don't work and told them to find another source and get these
hard sectored disks out of our supply system. Why they won't work in the IBM
machines is that the disk confuses the drive. The index hold signifies the
0 sector on the disk when it passes by the sensor. The hard sectored disk
keeps saying that every sector is the 0 sector and that's why you can't format
it to the IBM standard.
John Stepek
I had forgotten that the holes were in the media, instead of the
cardboard sleeve!
:+<,
Frank