New "D" drive -- WD Caviar - test-drb@ccmp.vtda.org

26 Feb 2007

---------------Original Messages:
Date: Mon, 26 Feb 2007 10:53:33 -0500
From: Patrick Finnegan <pat at computer-refuge.org>
Subject: Re: New "D" drive -- WD Caviar

On Monday 26 February 2007 01:29, M H Stein wrote:
...
  1) Actually, according to WD it's a 10-pin drive,
but CS is still pins
 1&2. However, I doubt that an old 486 would recognize CS, even with an
 80-conductor cable; the existing one probably works because it's
 treated as a master with a 40-conductor cable. 
The host has nothing to do with cable select working.  It only really 
depends on the drive and the cable.  That's why it's called "cable 
select" and not "host select".  One drive gets set to master, and the 
other to slave, based on their cable position.

Pat
-- 
Purdue University ITAP/RCAC       --- http://www.rcac.purdue.edu/
The Computer Refuge               --- http://computer-refuge.org

--------------Reply:

You're right, of course; as long as the MB grounds pin 28 CS should
work with a CS cable (mind you, this is a Packard-Bell, so anything's
possible ;-). But since this is a 486 and the drive is not the original, it's 
quite likely that it has a normal non-CS cable; for a single drive jumpering
CS or Master would work equally well, but a slave drive would require
moving the main drive jumper and configuring as dual Master/Slave.

I've certainly never seen a 486 with a CS cable as standard equipment
(or even a stock 40-pin CS cable for that matter, although they're easy
to make). Then again, this _is_ a P-B...

Still best to use two IDE ports with both drives master (or CS) if possible.

mike