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From: myxm@beta.UUCP
Newsgroups: comp.unix.xenix,comp.sys.ibm.pc
Subject: Re: XT hard drive & controller on AT motherboard
Message-ID: <11665@beta.UUCP>
Date: Fri, 30-Oct-87 09:42:49 EST
Article-I.D.: beta.11665
Posted: Fri Oct 30 09:42:49 1987
Date-Received: Sat, 31-Oct-87 20:17:25 EST
References: <70@stsci>
Organization: Los Alamos Natl Lab, Los Alamos, N.M.
Lines: 20
Keywords: XT AT disk controller motherboard
Xref: utgpu comp.unix.xenix:937 comp.sys.ibm.pc:8231
Summary: you bet! (but there are some hitches)


If your drive type has been selected using the jumper plugs on the WD
controller card, then you can just throw the sucker in an AT. If you
are using the Auto-Configure mode of the WD controller then NO WAY!

You tell the AT that the hard disk type for your drive is 0 so that
it allows the WD Controller and Bios to take care of things for you.

If you do this, make sure you get a full disk backup first. If you
cream things then at least you have something to fall back on.

I ran a WD Controller with a ST225 Drive for a while whilst waiting
for the real AT controller to come in. I also used the XT floppy
disk card. I wound up getting an AT controller because the XT card
is only designed for the 8bit bus whereas the AT card has the extra
nipple on it for the 16bit bus. The change in speed was noticiable
with the CORE disk speed test.

Mike Mitchell
myxm@lanl.gov