cctalk Digest, Vol 75, Issue 39
aek at bitsavers.org
Tue Nov 24 11:18:53 CST 2009
Alexandre Souza - Listas wrote:
> Maybe someone with a spare drive that could be dismantled and someone
> who could create the specific hardware to write analogically the pack,
> could create a machine for creating alignment packs?! :o)
Crisis Computer in San Jose had the equipment to create them, and has them
in stock. They aren't cheap.
You could probably get something good enough by bulk erasing a platter and
writing a program to format and write a single track on an aligned drive.
It won't be as good as a cat-eye pattern, but peaking on track center may
be close enough.
On the other hand, it isn't impossible to find used red packs.
CLEAN packs may be more difficult, though.
The bigger problem is after alignment, you may no longer be able to read
the packs that you have, which may have been written on an out of alignment
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