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Re: Rotting 5.25 floppies



schmidtd wrote:
On Aug 11, 10:34 pm, "Michael J. Mahon" <mjma...@aol.com> wrote:
schmidtd wrote:
On Aug 5, 4:00 am, "Michael J. Mahon" <mjma...@aol.com> wrote:
I would not start to diagnose with this mindset.
"When you hear hoofbeats, think horses, not zebras."
Indeed.  I was skeptical of this thread, until the exact thing
happened to me tonight.  Drive 1 started failing after the first few
disks in a stack; I started to wonder what was going on, and put in a
disk that worked just minutes earlier.  I/O error.  Ripped apart the
drive, got tons of gook with a Q-tip and 91% isopropyl alcohol.  The
drive still isn't reading, so I see what others were saying about
drives seeming toasted.  We'll see - I guess I'll go back and scrub
some more.  Some disks did strike me as slightly abrasive going in and
out of their sleeves.  Maybe I have that "abraded head" problem after
all! :-(  I got out drive #2 and experienced the same thing.  I can
only do this so many times before I run out of drives!
Yes, it can happen...

That's why I use my "sacrificial" drive for unknown-status
floppies.  If it gets bad, I just leave its case off for easier
access.  ;-)

-michael
Ok, disaster averted.  Another cleaning, this time dabbing the
pressure pad with isopropyl alcohol and letting the whole thing dry,
and it's back among the living.  *Whew.*  The problem disks were
narrowed down to a batch of Memorex 2S2D disks with white labels.
Upon closer inspection, they do have a blotchy appearance...
especially after spinning the disk inside the sleeve a little bit to
see disk surface that wasn't showing through the window all these
years.

I've found that the biggest mold "blooms" are not in the
window.  Probably too much light and too much air to dry
things out.  ;-)

In fact, the tyvek "gauze" inside the sleeve that cleans and
lubricates the media seems to make a great growth medium in
some brands/runs of diskettes...  Absorbency is a two-edged
sword.

-michael

AppleCrate II: An Apple II "blade server"!
Home page:  http://members.aol.com/MJMahon/

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