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@REPLYADDR Dave McGuire <mcguire@lssmuseum.org>
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On 9/28/23 17:34, Johnny Billquist wrote:
>>>> That might be the best way to read old RM05 packs, too.
>>>
>>> Noone really have the hardware to do this with an RM05 pack.
>>
>> Once again, we do have a CDC 9766 at LSSM. Someone just needs to
>> take it on as a project. The problem is manpower, not capability or
>> inventory.
>
> Well, the comment was about someone having something equivalent to the
> KryoFlux solution for floppies, but addressing the RM05 disk pack.
>
> Do you have the equivalent of a KryoFlox to read that pack? Another disk
> drive isn`t exactly the same thing, unless you are suggesting to rip out
> the electronics, and put in something else/new that will give you the
> raw magnetic fluctuations.
I don`t know why you`re being so argumentative today. I hope
everything is ok.
LSSM is not going to be doing any flux-transition imaging on a 9766.
If that`s what the OP wants, he`s not going to have an easy time finding
it. We could certainly do it with a lot of time and money, but there
aren`t a lot of 9766 packs out there anymore, so it really wouldn`t be
worth the investment in time and effort.
But what we DO have, once again, is a CDC 9766 drive, and controllers
for it for a couple of different buses that will read and write 9766
packs in the format used by the DEC RM05. It`s much easier to get a
drive running on a computer and do a "dd" like a sane person. If the
goal is to recover the data from intact well-stored disk packs, that`s
the best way to do it.
We`re not new at this; we do quite a lot of media imaging at LSSM.
We would not approach it any other way.
-Dave
--
Dave McGuire, President/Curator
Large Scale Systems Museum
New Kensington, PA
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