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Date: Wed, 27 Jul 2005 21:15:43 -0400
From: Jason Morgan <jwm-freebsd@sentinelchicken.net>
To: freebsd-questions@freebsd.org
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Subject: Boot page fault - alternative kernel needed?
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I have an old laptop that I am finally trying to get FreeBSD installed on.  It was recently running Linux just fine, 
but I am having a tough time getting FreeBSD installed on it.  Here is the error I get when booting.  I have typed all 
that is visible on the screen when it crashes.

# Begin

isa0: <ISA Bus> on isab0
atapci0: <Intel PIIX4 UDMA33 controller> port 0x3000-0x300f,0x376,0x170-0x177,0x
3f6,0x1f0-0x1f7 at device 1.1 on pci0
ata0: channel #0 on atapci0
ata1: channel #1 on atapci0
uhci0: <Intel 82371AB/EB (PIIX4) USB controller> at device 1.2 on pci0


Fatal trap 12: page fault while in kernel mode
fault virtual address  = 0xeb97b
fault code             = supervisor read, page not present
instruction pointer    = 0x8:0xc00eb87c
stack pointer          = 0x10:0xc10209f0
frame pointer          = 0x10:0xc10209f0
code segment           = base 0x0, limit 0xfffff, type 0x1b
                       = DPL 0, pres 1, def32 1, gran 1
processor eflags       = interrupt enabled, resume, IOPL = 0
current process        = 0 (swapper)
trap number            = 12
panic: page fault

# End

So, my question is: Is this the UHCI driver failing to load (happens at this same point every time I try to boot it)? 
Is there any way around this? Possible using a trimmed down kernel to boot?  Any suggestions?

Thanks in advance,
Jason