*BSD News Article 12941


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From: hm@hcshh.hcs.de (Hellmuth Michaelis)
Newsgroups: comp.os.386bsd.bugs
Subject: Julian's SCSI driver: no bootdrive found on reboot
Keywords: SCSI bootdrive
Message-ID: <2066@hcshh.hcs.de>
Date: 18 Mar 93 08:43:38 GMT
Organization: HCS GmbH, Hamburg, Europe
Lines: 30

Mysterious problem with Julian's SCSI driver:

I have installed it on a EISA machine with a 1742 and yesterday on a ISA
machine using a 1542 and both Machines show the same behaviour:
after a reboot, no bootdrive is found by the bios, i have to press reset,
after that the scsi drives are identified and all is ok - otherwise
the driver performs very well, without any other problems.

The EISA machine runs for a long time now, first with a copy from Julian,
then upgraded with the latest patchkit drivers. Because of the above mentioned
behaviour, i modified the cpu reset code in /sys/i386/i386/vm_machdep.c to
issue a EISA bus reset, after that, the machine does a cold boot and recognizes
the 1742 well after coming out of the reset now. I thought it was an EISA
speciality, and didn't care much more.

Yesterday i installed the same drivers (really, the source tree was NFS
mounted) but for the 1542 on an ISA machine, it runs well without problems,
but it shows THE SAME BEHAVIOUR when rebooting: a boot drive is not found
after a reboot, so i have to press the reset button to boot again - 
so it must be some common problem of both machines.

Has anybody had same effects ?
Did anybody solved them?
Or did i just mangled my sources .....

hellmuth
-- 
hellmuth michaelis    HCS Hanseatischer Computerservice GmbH    hamburg, europe
hm@hcshh.hcs.de              tel: +49/40/55903-170          fax: +49/40/5591486
[ the opinions expressed above are my own and not the opinion of anybody else ]