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From: gtc@aloft.att.com (gary.corcoran)
To: bugs@FreeBSD.org
Cc: jkh@FreeBSD.org
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Date: Thu, 13 Jul 95 17:07:25 EDT
Original-From: aloft!gtc (gary.corcoran)
Message-Id: <9507132107.AA25647@stargazer>
Original-To: FreeBSD.org!bugs
Subject: 2.0.5 install panic
Original-Cc: FreeBSD.org!jkh
Sender: bugs-owner@FreeBSD.org
Precedence: bulk


Help!  (bet you never hear that...  :-)

I tried installing FreeBSD 2.0.5 (release, update, AND 6/22/95 SNAP versions)
and keep getting a kernel panic during the installation.  It happens as soon
as I try to "commit" the settings to the hard disk.  The dialog message is
(approx.):
"Writing partition information to sd0", when I get: "panic: vm_bounce_alloc".

My system configuration is:
	EISA/PCI AMI Titan II motherboard, 90MHz Pentium (single)
	BT946C PCI SCSI controller
	32MB RAM
	Micropolis 3243 4GB SCSI-2 hard disk

Since I *do* have other OSes on my hard drive, I need to keep "DOS translation"
mode turned on in the SCSI controller (side note: the 2.0 CD that I bought is
useless because of this, but it seems that 2.0.5 *finally* understands the
"other" SCSI mapping mode for disks greater than 1GB, right?).

I have specified FreeBSD as the third partition, with a 500MB DOS partition
as the first partition, and I specified "DOS partition" as the installation
medium.

So, my questions are:

1. Is this a known problem, that just "doesn't work" in this version?  Or is
there possibly some installation option that I can change to bypass this bug?

2. Why does the system appear to want "bounce buffers" when I have a PCI
   bus-mastering SCSI card?  Shouldn't greater than 16MB be irrelevant in
   this setup?  (note: I *can't* try running with 16MB of memory, as the
   Pentium requires 64-bit wide memory, and I only have two 16MB
   32-bit[plus parity] SIMMs).

3. Do you think this may be fixed before version 2.1, and/or when do you
   think version 2.1 will be available?

4. Am I correct that the SCSI disk access routines have been fixed in 2.0.5 
   to understand the greater than 1GB DOS translation parameters (255 heads,
   63 sectors/track) ?


Thanks for your time,

Gary Corcoran
gtc@aloft.att.com