Date: Thu, 4 Sep 2003 13:11:25 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: David Kelly <dkelly@HiWAAY.net> Cc: FreeBSD-Questions@freebsd.org Subject: Re: Undo MBR Message-ID: <20030904121125.GC88888@happy-idiot-talk.infracaninophile.co.uk> In-Reply-To: <200309031800.30413.dkelly@HiWAAY.net> References: <20030903181348.5cbfcabb.pnmurphy@cogeco.ca> <200309031800.30413.dkelly@HiWAAY.net>
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On Wed, Sep 03, 2003 at 06:00:30PM -0500, David Kelly wrote:
> On Wednesday 03 September 2003 05:13 pm, Paul Murphy wrote:
> > I have just installed FBSD-CURRENT on a test box. During install I
> > unwittingly installed a BootMgr entry for the second HDD (it will
> > just be a data disk, no need to boot from it).
> >
> > If I do 'dd if=3D/dev/zero of=3D/dev/rad2 count=3D15' will this "erase"
> > the BootMgr or will I have to redo Fdisk and etcetera. There is no
> > data on the disk yet so this would be no hardship, but is there a
> > "proper" way of doing what I want?
> >
> >
> > Just to clarify, upon booting I get:
> >
> > F1 FreeBSD
> > F5 Drive 1
> >
> > but I just want to boot straight into FreeBSD, no "dual-boot".
>=20
> I don't know why you are fretting about this prompt and momentarily=20
> pause in the boot process. Also think you are confused about the MBR=20
> thing on the 2nd drive.
>=20
> The prompt above is coming from your first HD. If the BIOS did not know=
=20
> about the 2nd drive the F5 entry would not be there and the FreeBSD F1=20
> entry would still be there. You could hide this prompt by retuning the=20
> MBR to pause 0 or 1 seconds. Zero might be infinite.
>=20
> To eliminate the prompt, wipe the HD and reinstall "dangerously=20
> dedicated." The result will be a disk which lacks the headers which=20
> allows other x86 OS's to understand what/how the disk is used.
Errr... That's a little excessive. The quick way to remove the
FreeBSd boot manager and restore a standard MBR is:
# boot0cfg -B -b /boot/mbr ad0
(The OP might want to do that on his data disk ad2 as well). No
changes to the filesystems on those disks should be necessary.
Cheers,
Matthew
--=20
Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks
Savill Way
PGP: http://www.infracaninophile.co.uk/pgpkey Marlow
Tel: +44 1628 476614 Bucks., SL7 1TH UK
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