On Wed, 2007-06-20 at 21:09 -0700, Chuck Guzis wrote:
I would submit that by the early 1990's, there
weren't any high-
quality DSHD diskettes. DSED were even worse.
I have:
8" disks that came with my PDP-11/73, some of which have labels dated in
the late 1970s and early 1980s. They all read fine in my RX02.
5.25" disks that came with my Sanyo MBC-<something> CP/M-86 machine.
They read fine.
3.5" DD disks formatted to around 400k single-sided for my Ensoniq
Mirage sampler, the oldest from around 1985, the newest being NOS 3.5"
DD disks off eBay. They all work fine, except for one or two that were
rewritten in a Mirage with a dodgy drive - I suspect they've got stuff
written "between tracks" and won't format correctly now.
3.5" DD disks from around 1990 for my Ensoniq EPS sampler. They work
fine.
3.5" HD disks from around 1995 for my E-Mu ESi-4000 sampler. They work
fine.
3.5" HD disks bought about four years ago - opened a packet recently and
half of them won't even format. One managed to fatally gunge the head
of my PC's floppy drive.
Gordon