>
>Subject: RE: FW: Third round of Diskette Experiments
completed (results)
> From: Fred Cisin <cisin xenosoft.com>
> Date: Fri, 29 Sep 2006 18:23:34 -0700 (PDT)
> To: "General Discussion: On-Topic and
Off-Topic Posts" <cctalkclassiccmp.org>
>
>On Fri, 29 Sep 2006, Chuck Guzis wrote:
>> There were some really terrible 5.25" DSDD
(360K) disks marketed. One type
>> was sold by Control Data (StorageMaster). If I
see one of those in a
>> . . .
>> "Elephant" brand 360Ks can be
problematical in the same way, as can the
>> "Precision" brand.
>
>Just about every brand produced some bad batches.
>The Verbatims right before "Datalife" were
pretty bad. Was the trademark
>"Datalife" created just to try to reassure us
that they were no longer
>going to jopardize the life of our data?
>
>The worst 360Ks that I encountered was Roytype (Royal
Typewriter).
>Within a few minutes after writing and verifying, they
would be blank
>again. Hmmmm. could also get something like that
from the wrong
>coercivity, ...
>
It all started back when with the 3M Blackwatch audotape..
Great stuff until
it was around afew years then it shed binder like mad.
It takes a bit of majik to get the oxide coating to stick to
the mylar
base.
the other factor was that of all the brands I think the base
material
only came from three or five makers like 3M, BASF, Nashua,
Dupont maybe
others. The key is if a maker lost the receipe that could
show up
as their brand and five others or maybe only the others!
Allison
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