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Date:      Sun, 9 Apr 2000 14:26:59 -0700 (PDT)
From:      x <fbibsd@yahoo.com>
To:        freebsd-bugs@freebsd.org
Cc:        fbibsd@yahoo.com
Subject:   kern/17870 mfsroot.flp boot bug duplicated in simplified setup; 3.4-RELEASE works better.
Message-ID:  <20000409212659.5679.qmail@web2005.mail.yahoo.com>

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To simplify and verify the nature of the problem, the following
conditions were changed (relative to the original kern/17870 PR),
and the problem duplicated:

1) switched Primary Master HDD to an old fujitsu MPA3035AT HDD (3.5 GBy)

2) Changed "PnP Aware OS?" from "YES" to "NO" in BIOS (I suppose I should have
had it NO before, though I'm unclear on this point since more and more PnP
support seems to be in BSD, and the only PnP ISA device I have is a supported
Creative AWE32 sound card).

3) dusted out system to get rid of the 'bugs' ;)

4) removed 3c905B-tx ethernet card
5) removed Creative AWE32 PnP ISA sound card
6) removed Diamond FirePort 40UW ncr875 style SCSI card

(at this point only the ATI Mach64 VGA PCI card remained, plus the
on-motherboard IDE, FDD, SERIAL, PARALLEL, USB, Keyboard, and such)

In this minimalized configuration, kern/17870 (mfsroot of 4.0-release crashing
a few seconds after it begins loading) is still present.

Next I made 3.4-RELEASE kern.flp and mfsroot.flp onto the same floppy diskettes
as I had 4.0-RELEASE on.  3.4-RELEASE's kern.flp booted fine.
3.4-RELEASE's mfsroot diskette came up fine, though it did display the
following error before it proceeded to show the visual kernel configuration
menu:

"can't open '/mfsroot': no such file or directory".

It seemed to take it in stride and continue, however, well past the point where
4.0-RELEASE's mfsroot would crash or reboot.

Either there's a BIOS option that's wrong for 4.0, or 4.0 really hates something
about my VGA / motherboard / BIOS / onboard or USB peripherals.

Oh and I had used 'md5' to compare the 4.0-RELEASE floppy images with the
4.0-RELEASE /floppies kern.flp and mfsroot.flp images.  I also remade the
floppies twice, so I don't believe I have a bad diskette issue.

It's a bummer that the floppy boot blows up and I can't boot the CDROM for
some strange reason.  I'll try a few more things to diagnose this, but since
I can't get the O/S booted, I've got few options to helpfully debug the
issue.



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