Good advice there from Rara . . . .
These problems have dogged users of older Synths FOR EVER . . . .
Floppy Disk are virtually extinct
from the mainstream and we tend to forget that "In the beginning"
they were ALL DSDD - i.e 720k (if you were on a PC) - Mac IIRC described them as 800k . . . ?
As a result, most early boards, including the SY85 were fitted with DD Drives . . . .
For whatever reason, (probably financial) Yamaha have never been (IMO) early-adopters of new technology,
so it took a while for HD floppy drives to appear in their Boards.
I believe the EX5 has one . . .
Simply using your Synth alone with floppy disks is usually no problem at all, but as most of us also have computers,
why would we NOT wish to build Libraries of Sounds to use?
The inclusion of the PC in the loop is the cause of problems, simply because Computers swiftly adopted
HD Drives universally . . .
They LOOK the same . . . ?
Yes indeed, but this
is where the problem lies . . . . .
Check this OLD post of mine, where I attempted to explain the issue . . . .
viewtopic.php?f=56&t=6324&hilit=Floppy+ ... =15#p32435
Once you understand the problem . . . ALL should be clear . . . . .
I can't stress enough the importance of cleaning the heads of the Drive.
You may as well see to it WHILE you are changing the belt . . .
You can then do it thoroughly
with a cotton-bud and IPA. . . or if already reassembled - with one of these:
If your Board was a second-user item, then in all likely-hood, the Heads have NEVER been cleaned . . . .
That done, ALL should be well . . . .
As a postscript - Disks can (and DO) wear out and "go bad" - for a variety of reasons.
Quality can vary from brand to brand and batch to batch, due to manufacturing tolerances . . . .
Back in the Day - Substandard stock used to be cleared by the Majors and sold cheap as
"White Label" Disks at computer Fairs . . . although CHEAP, you could expect find "Duff" disks among them . . . .
The other "snare" is that of using HD Disks, by taping-over the extra hole in the cover . . . .
This is a common trap, simply because HD Disks are what you TEND to have handfuls of, lying around,
and (superficially) they look the same.
Results WILL be variable.
Due to the higher coerscivity of the Media itself, a DD Drive does not have enough GRUNT to write successfully to it.
So FORMATTING them first in the Synth will likely NOT be successful
Annoyingly, you'll often be told that the Write HAS been successful . . . .
You will only find out that it WASN'T when you come to read it back.
So (mostly) BEWARE . . . . . .