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echo: tech
to: Roy J. Tellason
from: Paul Rogers
date: 2002-11-13 18:51:00
subject: disk geometry revisited

RJT> Did a search for the partition table sig bytes of 55AA,
 RJT> and I found a *bunch* of instances of it,  in most if not
 RJT> all cases at the end of a sector,  a fact I found
 RJT> interesting since I don't remember prior setups on that
 RJT> particular physical drive.

I remember 55AA from the CP/M days--that was the bit pattern written to
newly formatted diskettes.  55AA = 0101010110101010  It makes a nice
frequency for MFM detectors.

... To some lawyers all facts are created equal.
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SEEN-BY: 226/600 229/1000 2000 3000 249/116 266/12 267/200 280/5003 333/0
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