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Date:      Mon, 4 Nov 2002 09:19:44 -0800 (PST)
From:      "Bruce R. Montague" <brucem@mail.cruzio.com>
To:        andrewdean@connexus.net.au, freebsd-small@FreeBSD.ORG
Subject:   Re: PicoBSD boot problems?
Message-ID:  <200211041719.gA4HJiU00556@mail.cruzio.com>

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 Re: 

 > On Machine C it gets to "Uncompressing...done" then reboots ...

 Was the FreeBSD 4.7 from a current CVS or a Release?
 Has FreeBSD ever run on the machines that do not boot?
 Are you running the same config on all 4 machines, or
  have you tailored the configs (devices, etc.) to the
  machines?
 What are the BIOSes?


 > Any ideas?

 Just now I have a slightly similar problem with
PicoBSD under 5.0-current that seems to be due to
a recent patch to src/sys/i386/i386/machdep.c
in "getmemsize()":

"Change method to determine base memory size.
Try INT 15H/E820H first, then fall back to the old compatibility
method (INT 12H).
This is a workaround for newer machines which have broken INT 12H BIOS
service implementation."

 It looks like this was also recently MFC'd to 4.7.
 http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/i386/i386/machdep.c

 The new scheme seems to break something wrt
a NatSemi XpressROM BIOS :)

 - bruce


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