From: dave at horsfall.org (Dave Horsfall)
Subject: [COFF] Old non-Unix software and manuals.
Date: Mon, 9 Mar 2020 15:18:30 +1100 (EST) [thread overview]
Message-ID: <alpine.BSF.2.21.9999.2003091509280.64345@aneurin.horsfall.org> (raw)
In-Reply-To: <CANCZdfpUqLdihsH488qGk4jy+mJ7RcKUnAS0KWJavhmSWZDiJA@mail.gmail.com>
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On Sun, 8 Mar 2020, Warner Losh wrote:
> That's why I got a kyroflux... too hard to find an old enough pc that
> the floppy controller supports the full range of crazy that once roamed
> the earth...
There were also many devious copy protection schemes used for games etc.
One common one was to punch a hole in a known sector (!) and if you didn't
get a read error when accessing it then it was an illegal copy; another
was to store data in an otherwise unreachable sector e.g. track 41 on a 40
track disk...
In short, good luck :-)
Hmmm... I just looked up the KryoFlux, and it's a fascinating device; it
actually gets right down to the flux level! I've never seen a 3" disk
before though.
-- Dave
next prev parent reply other threads:[~2020-03-09 4:18 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-08 20:22 peter
2020-03-08 20:30 ` krewat
2020-03-09 7:30 ` lars
2020-03-08 20:34 ` imp
2020-03-08 21:16 `
2020-03-08 22:32 ` wobblygong
2020-03-08 23:07 ` spedraja
2020-03-09 22:10 ` dave
2020-03-08 23:48 ` wkt
2020-03-09 3:18 ` dave
2020-03-09 3:39 ` imp
2020-03-09 4:18 ` dave [this message]
2020-03-20 12:55 ` tih
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