From owner-freebsd-questions Thu Jan 19 13:23:01 1995 Return-Path: questions-owner Received: (from root@localhost) by freefall.cdrom.com (8.6.9/8.6.6) id NAA00245 for questions-outgoing; Thu, 19 Jan 1995 13:23:01 -0800 Received: from copper.cmp.com (copper.cmp.com [198.80.26.247]) by freefall.cdrom.com (8.6.9/8.6.6) with SMTP id NAA00238 for ; Thu, 19 Jan 1995 13:22:56 -0800 Received: from [198.80.26.5] by copper.cmp.com with SMTP (1.38.193.5/16.2) id AA24337; Thu, 19 Jan 1995 16:22:37 -0500 Received: by mailgate.cmp.com with Microsoft Mail id <2F1F0222@mailgate.cmp.com>; Thu, 19 Jan 95 16:21:54 PST From: Plyaskin Sergey To: "'freebsd-questions@freebsd.org'" , rsoles Subject: Re: FreeBSD/Adaptec 1740 problem Date: Thu, 19 Jan 95 16:20:00 PST Message-Id: <2F1F0222@mailgate.cmp.com> Encoding: 75 TEXT X-Mailer: Microsoft Mail V3.0 Sender: questions-owner@FreeBSD.org Precedence: bulk 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 > ---------------------------------------------------------------------------- > ------------ > > //-------------------------------------------------------------------------- -- // Roger L Soles // PO Box 280785 // San Francisco, CA 94124-0785