Date: Wed, 30 Jul 2008 17:20:32 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Dominik Meister <dm-lists@meisternet.ch> Cc: freebsd-questions@freebsd.org, nico-freebsd-btxhalt2008@schottelius.org Subject: Re: BTX halted on boot Message-ID: <489094D0.5000709@infracaninophile.co.uk> In-Reply-To: <20080730135059.GA21564@mercury.meisternet.ch> References: <20080730135059.GA21564@mercury.meisternet.ch>
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Dominik Meister wrote:
> Hi
>=20
> We are experiencing a problem with one of our FreBSD 6.2 machines. The
> machine has been running fine for months until we had to reboot it. Now=
> it doesn't boot anymore. After the boot loader we get what looks like a=
> register dump:
>=20
> FreeBSD/i386 boot
> Default: 0:ad(0,a)heap
> boot: /boot/kernel/kernel\
> int=3D0000000e err=3D00000002 efl=3D00010086 eip=3Dc042426a
> eax=3Dc06da7a8 ebx=3Dc06da7a0 ecx=3D00000000 edx=3Df000ff53
> esi=3D00000000 edi=3Dc06da57f ebp=3Dc08f6d4c esp=3Dc08f6d40
> cs=3D0008 ds=3D0010 es=3D0010 fs=3D0010 gs=3D0010 ss=3D0010
> cs:eip=3D89 42 0c eb 07 90 8d 43-08 89 46 14 89 5e 10 8d
> 46 10 89 43 0c 8b 47 0c-89 43 10 85 c0 74 0b 8b
> ss:esp=3D7f a5 6d c0 00 00 8f 00-00 e0 8f 00 64 6d 8f c0
> 75 3b 42 c0 a0 a7 6d c0-7f a5 6d c0 20 a5 6d c0
> BTX halted
>=20
> and the machine reboots.
>=20
> Any suggestions what might be the problem? All I can find about "BTX
> halted" references to problems when installing a fresh system and not
> out of a sudden on machine which has been running fine before.
>=20
> Any hints are highly appreciated.
This is telling you that the boot loader has become corrupted, and
is crashing. A leading cause for this would be hardware failure --
something gone wonky with your hard drive.
Try booting the 'fixit' system from the installation media and see
if you can fsck and access the filesystems on the disk -- it may be
a localised problem that's killed the ability to boot from the drive leav=
ing the rest unaffected. Or the entire drive may be toast, and
you've got no option other than to get yourself a new drive and restore
from backup. Actually, given the fairly cheap price of disks nowadays,
I wouldn't try too hard to fix up the original disk: if you're going to=20
have to spend some hours working on it, it's more economic to ditch
the old one and start afresh.
Cheers,
Matthew
--=20
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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