Path: utzoo!utgpu!water!watmath!clyde!att!gargoyle!sphinx!mobo
From: mobo@sphinx.uchicago.edu (Samuel Wilson)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Hard drive / controller problems
Summary: Way around the twist?
Message-ID: <4452@sphinx.uchicago.edu>
Date: 15 Jul 88 01:46:41 GMT
References: <222@psuhcx.psu.edu> <16800327@clio> <230@psuhcx.psu.edu>
Reply-To: mobo@sphinx.uchicago.edu.UUCP (Samuel Wilson)
Organization: Univ.of Chicago Dept. of Anthropology
Lines: 31

In article <230@psuhcx.psu.edu> wcf@psuhcx (Bill Fenner) writes:
>In article <16800327@clio> berger@clio.las.uiuc.edu writes:
>|
>|using a "twisted" 34 pin cable.  That's what IBM supplies for their
>|floppy disk drives, but it should not be used with the hard disk.  Use
>|a straight cable, and set the disk address select jumper on the
>|drive appropriately.
>|
>Well, I took the cable apart, removed the twist, set DS2, and bagoomba!
>20 megs.  Nobody that I talked to, including Seagate Tech support and all
>the computer stores around town, thought anything about the fact that the
>cable was twisted.  I know that at least 2 other people are using twisted
&c...

I put a second ST225 in an ATT6300.  I was using a Western Dig. WX2
controller.  I was also using a cable with a twist between the 
connection for drive c and d (or a and b, as the case probably was). 
the controller could talk to one drive, or the other, but never both
at once.  I called Everex (who, for some reason known only to them had
marketed the WD-Seagate combination), and the (very clued-in) tech
guy said, "well, you have both drives set to drive 2 don't you?"
(silence on my end).  I finally said "Yea, sure I do, course I do, 
waddya think, I'm a dummy, that's the ticket" and went and set both
seagates to be drive 2 and the thing works great.  

I have some idea how controllers work, and some idea how drives work, 
but no idea why *that* worked.

-- 
Samuel Wilson         ..ihnp4!gargoyle!sphinx!mobo
                          mobo@sphinx.uchicago.edu
University of Chicago, Division of Social Sciences