*BSD News Article 47109


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From: jdowdal@cs.umd.edu (John Dowdal)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: NCR 815 SCSI problems w/2.0.5R and snap
Date: 17 Jul 1995 15:46:58 -0400
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 15
Message-ID: <3ueeni$hr1@lovedog.cs.umd.edu>
References: <3u8sul$4sr@amanda.cs.umd.edu>
NNTP-Posting-Host: lovedog.cs.umd.edu

In article <3u8sul$4sr@amanda.cs.umd.edu>,
John Dowdal <jdowdal@cs.umd.edu> wrote:
>I have attempted to boot the floppies from both the 2.0.5R and 950622-SNAP
>leading to a "integer divide fault panic" after detecting SCSI devices, but
>before completing the boot.

I solved my problem.  The future domain used a geometry of 1MB/cyl.  The
NCR used a geometry to yield <1024 cylinders.  Thus, the controller transplant
led to the problem.  I re-fdisk'd the disk and the problem went away.

There seems to be no problem with the disk portion of NCR.  I got 3MB/sec (6MB
combined) from both disks at the same time and up to 5MB/sec from the DEC disk
depending on zone (from dd if=/dev/rsd? of=/dev/null bs=256k)

John