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From: gab10@griffincd.amdahl.com (Gary A Browning)
Newsgroups: comp.unix.bsd
Subject: Re: SCSI tape drive not accessible
Message-ID: <50Bd02nJ1b7101@JUTS.ccc.amdahl.com>
Date: 25 Jul 92 06:41:24 GMT
References: <TMH.92Jul23041936@keks.first.gmd.de>
Sender: netnews@ccc.amdahl.com
Organization: Amdahl Corporation, Sunnyvale CA
Lines: 38
In article <TMH.92Jul23041936@keks.first.gmd.de>, tmh@keks.first.gmd.de
(Thomas Hoberg) writes:
>I managed to get the "Tiny BSD" floppy accross the modem and got
>386BSD installed on my system (486/33, 16MB, ET4000/8514, AHA1542, 1GB
>Wren VII + 88MB Syquest SCSI drives, Tandberg TDC3800 QIC 525 SCSI
>Streamer). The SCSI disks are at targets 0+1, the tape drive is at
>target 4. On boot up, only the first disk is recognized. Trying to
>read off /dev/ras1a seems to attach the Syquest drive. Any attempt to
>read /dev/ras4a results in an error. cat </dev/ras4a returns "bad file
>descriptor", cpio -itvc </dev/ras4a returns "error 9". All other
>targets return "sense errors" with lots of status data (mostly zeros).
>Does 386 support only certain tape drives? The drive works fine with
>ISC UNIX, DOS (various programs) and OS/2 (modified GTAR).
The SCSI tape drive I was using had the same problem. Try
configuring it as lunit 2. It seems to work at 2 with one or
two SCSI drives. I have not traced down why it will not work as
unit 4, but I suspect it could be changed in the kernel configuration.
I believe you are correct in that most other O/Ss expect it as unit 4.
If Bill is reading this and it is possible to change in the configuration,
maybe the first set of official patches will change this.
>BTW: I use a small partition booter wholly contained within the master
>boot block. Works like a charm! I can select any OS to boot at
>startup. In theory I could even boot off a second disk drive (the OS's
>secondary bootstrap has to support that, though (e.g. DOS doesn't). If
>there is interest, I could post it together with a (DOS based)
>installation program.
I'm interested. Especially in the part that allows possible booting from
a second disk. The partition booter I was using is not compatible with
386BSD.
--
Gary Browning | Exhilaration is that feeling you get just after a
| great idea hits you, and just before you realize
| what is wrong with it.