Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!tektronix!orca!ozvax!randyh
From: randyh@ozvax.WV.TEK.COM (Randy Hendry)
Newsgroups: comp.sys.amiga
Subject: Re: Different Hard Disks on the Bridgeboard
Message-ID: <1534@ozvax.WV.TEK.COM>
Date: 4 Apr 89 17:12:27 GMT
References: <7620.AA7620@heimat>
Reply-To: randyh@duoart.wv.tek.com (Randy Hendry)
Organization: Tektronix, Inc., Wilsonville,  OR.
Lines: 60

In article <7620.AA7620@heimat> sneakers@heimat.UUCP (Dan "Sneakers" Schein) writes:
>In Message <11469@louie.udel.EDU>, WF24741%UAFSYSB.BITNET@umrvmb.umr.edu (Bill Farmer) writes:
>
>>Could someone from CBM please tell me if it is possible to use two hard
>>disks on the Bridgeboard with the following setup:
>>
>>WD1002A-27X controller
>>60 meg Miniscribe (3675) 6 heads
>>30 meg Seatgate (ST238R) 4 heads
>>
>>Currently, I am unable to use which ever drive is second as it defaults
>>to the number of heads of the first drive
>
>   My first question/suggestion is does this same setup work in a true blue
>   (or clone)?  Not having any actual hands on with that controller im not
>   sure if it is capable of supporting those drives at the same time.

I had the exact same problem about a year ago.  My setup is very similar
to Bill's:

        Across the bridge:
	Western Digital controller WD1002A-WX1
                ROM = 62-000094-002 (latest SuperBIOS as of one year ago)
	Drive 1:  Maxtor XT-1105  (918 cyl, 11 heads, ~80MB)
        Drive 2:  Micropolis 1304 (830 cyl,  6 heads, ~40MB)

Note the controller chips are still WD, but it's MFM, not RLL and the disks
are different than Bill's (but they still have *different* number of heads).

Everything (lowlevel, fdisk, adisk, etc) works fine until dpformat:

dpformat drive jh1: name jh1
Format cyl 516.  Retry required cylinder 1.  Hard error cylinder 1.
...

Using DiskDoctor:
Hard Error Track 1 Surface  6.
...
Hard Error Track 1 Surface 10.
Hard Error Track 2 Surface  6.
...

Probably needless to say I had the smaller disk (6 heads) second.  Dpformat
*thinks* it's like the first disk and has 11 heads.  After spending
a couple of weeks on the problem, I gave up and am using the 80M disk
for AmigaDOS and the 40M for MSDOS (which is a big waste since I only use
the bridgeboard for (1) hard disk support, and (2) file transfer from work
via the 360K floppy).  Given this setup everything works fine, so at least
in my case, Dan's suggestion about the controller is not the problem; i.e.
it works as long as I don't try to use both disks from the Amiga side.
It seems it's the Amiga/Janus software that's having a problem so trying
it in a true blue wouldn't help.

Is this a Janus bug?  Is it An incompatability beteen Janus and certain
controllers?  Will it work the Janus 2.0?  Why can't we just use Mount,
MountList, and Format like is done with all the other drives?
-- 
Randy Hendry		randyh@duoart.wv.tek.com    ...!tektronix!orca!randyh
Tektronix, Inc.		Interactive Technologies Division	(503)685-2399w
P.O. Box 1000, M.S. 61-049,  Wilsonville, OR 97070		(503)639-7697h