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Date:      Tue, 30 Apr 2002 12:17:53 +0100
From:      Daniel Bye <dan@slightlystrange.org>
To:        FBSD-Q <freebsd-questions@freebsd.org>
Subject:   Re: Toshiba Satellite 1670CDS + FREEBSD Woes
Message-ID:  <20020430111753.GB28420@icarus.slightlystrange.org>
In-Reply-To: <20020430084749.GQ66193@ns2.wananchi.com>
References:  <20020430084749.GQ66193@ns2.wananchi.com>

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On Tue, Apr 30, 2002 at 11:47:50AM +0300, Odhiambo Washington wrote:
> hiya gang,
> 
> I am having a problem with a Toshiba laptop here and I hope one of you can help
> in advising.
> 
> This laptop has given me enough issues and refused to run Winblows - it just hangs
> or complains about himem.sys, VxD errors (whetever those are).
> 
> So I decided to install FreeBSD from CD. This is a 4.4-RELEASE CD. Three times
> it panicked while loading the kernel and rebooted immediately/spontaneously. Now I
> have an error on the screen when booting from 4.4 CD:
> 
> 
> Fatal trap 12: page fault while in kernel mode
> fault virtual address		=	0x3a
> fault code			=	supervisor write, page not present
> instruction pointer		=	0x8 :0xc02a1eef
> stack pointer			=	0x10 :0xc06b8dec
> frame pointer			=	0x10 :0xc06b8e8c
> 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			=	Idle
> interrupt mask			=	net tty bio cam
> trap number			=	12
> panic: page fault
> Uptime: 0s
> 
> 
> Could this be a device problem? Memory?? 
> 
> 
> Thanks in advance
> 

Hi Wash,

It does indeed look as if some of the chips on the RAM are fried.

himem.sys is a terminate and stay resident driver that allows MSDOS to 
address memory above the base 1MB it can see natively without it.  This
is also called extended memory by DOSers.

A vxd is a virtual device driver which runs in privileged mode (on 
processor ring-0).  As it runs on ring-0, it has full access to all 
attached hardware.  They are started at OS startup, or can be loaded 
dynamically into a running "kernel".  Anyhoo, this is a FreeBSD, not an 
MS-DOS list, so I'll stop right about now!

Dan

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