Am Montag, 16. Januar 2023 um 17:55:22 MEZ hat Jon Elson via cctalk
<cctalk@classiccmp.org> Folgendes geschrieben:
>Washington University had a magnetic media lab at one time,
>and got several semi loads of gear from an IBM lab. There
>were air bearing spindle tables and many racks of IBM
>circuitry based on MST chip technology. I assume some of
>this could have been used as servo track writers. Any
>system that doesn't have a dedicated servo surface or
>embedded servo info doesn't need a servo track writer, it
>can just format the pack by itself (with proper diagnostic
>programs, of course.)
>
>Aligning the heads on the drive is an issue only if you want
>to interchange platters. Then, you need an alignment pack -
>wow, those would be quite hard to find today! There are
>tools like alignment meters that can make the job easier,
>but really all you need is a scope and generally a rod with
>an eccentric tip to adjust the head position.
>
>Jon
Thanks for sharing this information with us, Jon! I wasn't aware that academia
got equipment from industry for research on magnetic media, but it actually
makes sense, as a lot of research was conducted in this field.
I can confirm that finding alignment packs is extremely difficult!
Greetings,
Pierre
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