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From: ssd@sugar.hackercorp.com (Scott Denham)
Newsgroups: comp.periphs,comp.sys.amiga.hardware,comp.sys.ibm.pc.hardware
Subject: Need info on CDC disk drive
Keywords: CDC MPI Bj7D5-A
Message-ID: <7468@sugar.hackercorp.com>
Date: 6 Jan 91 07:07:50 GMT
Organization: Sugar Land Unix - Houston
Lines: 19

This is a repeat of an earlier request, to a somewhat wider distribution
and with some additional information.

I'm looking for techincal information on a mystery hard disk I came across
recently. It's made by CDC Magnetic Peripherals Inc, and carries the 
numbers :
  MN - BJ7D5-A  (model number?)
  PN - 77731603
 Lot - O-8606   (date of manufacture?)
 
If it's the original disk for the subsystem it came out of, it's a 30
Megger. From the defect list, it's got at least 5 heads and 503 cylinders.
It's apparently an ST-506 interface (at least my A2090 ST-506 controller
is able to talk to it). What I really need to know is the actual number
of cylinders, and the write precompensation setting, if any, and the
number of sectors/track MFM. 
 
  Scott Denham 
  ssd@sugar.hackercorp.com