On 7/29/2021 1:22 PM, Mark Huffstutter via cctech wrote:
Yes, I sadly, learned that important lesson years ago, after finding My
"Original" Original PC DOS diskette set pretty much destroyed, left in
The folders in storage for too long.....

-----Original Message-----
From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Al Kossow via 
cctalk
Sent: Thursday, July 29, 2021 10:15 AM
To: cctalk@classiccmp.org
Subject: Re: IBM PC diagnostics disks

On 7/29/21 10:08 AM, Mark Huffstutter via cctalk wrote:
Hi Richard,
                     I could use them if they are still available, I have the 
very nice binder manual for them, minus the disks!


Don't store diskettes in vinyl sleeves.
The plasticiser leaches out of the vinyl onto the surface of the diskettes.



Interesting. The IBM ones that I have had in the clear 5 x 8.5 vinyl sleeves were in their paper-like material sleeves inside the vinyl. They have been mostly just fine - just read them in this past week.

On the other hand maybe 10% or so of my 3B2 floppies that were similarly stored, but in a somewhat different form of vinyl had more sector errors. Fortunately I copied some of them (the most critical ones) some time ago, and those were stored separately, so I expect those will be fine, but I haven't yet read them in.

JRJ

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