Date: Thu, 19 Jan 95 16:20:00 PST From: Plyaskin Sergey <splyaski@cmp.com> To: "'freebsd-questions@freebsd.org'" <freebsd-questions@FreeBSD.org>, rsoles <rsoles@SIRIUS.COM> Subject: Re: FreeBSD/Adaptec 1740 problem Message-ID: <2F1F0222@mailgate.cmp.com>
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Okay, it makes sense to try using a terminator pack, thanks.
However, I still do not understand why it worked with DOS/Windows. And
regarding (4): how does it affect the performance? I have set 5MB/s already,
and it doesn't help.
Thanks.
Serge
----------
From: rsoles
To: Plyaskin Sergey; 'freebsd-questions@freebsd.org'
Subject: Re: FreeBSD/Adaptec 1740 problem
Date: Thursday, January 19, 1995 10:07AM
I'd guess it's a termination problem.
1 - make sure you're running the 1740 in enhanced mode (eisa config
if necessary)
2 - make sure you've got each physical end of the chain terminated with
no termination in the middle
3 - consider using a terminator pack rather than the termination built
into any device (if the host adapter is at the end of the chain
it should be ok to use it's termination).
4 - if nothing else works, slow down the maximum transfer rate for those
devices (using your eisa config)
At 09:49 AM 1/19/95 PST, Plyaskin Sergey wrote:
>
>I've been running FreeBSD 2.0 on a Gateway 2000 486SX25 ISA machine with no
>problems for about 2 months. It has an Adaptec 1542CF SCSI host adapter and
>one external 1Gb SCSI HD.
>
>Now, I have problems installing FreeBSD on a Mitac 486DX33 PC with EISA
bus.
>It has EISA Adaptec 1740 SCSI host adapter and 2 SCSI hard disks. Under
DOS,
>everything worked fine. I decided to get rid of DOS and install FreeBSD. I
>deleted all patitions on the disks using fdisk and started installation.
>When starting the computer, I get a message indicating that both HDs are
>detected:
>
>SCSI ID0 Installed
>SCSI ID1 Installed
>
>however, FreeBSD finds only the adapter but not the disks. I tried both
>FreeBSD 2.0-RELEASE and FreeBSD 2.0-950112SNAP. I also tried to set the
>adapter to both standard and enhanced mode (in standard mode it's detected
>as 1540.) I borrowed an Adaptec 1540 (ISA) from my friend, and the disks
>were detected by FreeBSD.
>
>Is that the problem with that particular 1740 adapter or EISA adapters in
>general or I do something wrong? I'm confused and would appreciate any
>help/hints.
>
>
----------------------------------------------------------------------------
> -----------
>Serge Plyaskin splyaski@cmp.com
>Advanced Technology Center 516-562-5951
>CMP Publications
>
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> ------------
>
>
//--------------------------------------------------------------------------
--
// Roger L Soles
// PO Box 280785
// San Francisco, CA 94124-0785
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