Date: Wed, 06 Jul 2005 17:33:21 +0100 From: Alex Zbyslaw <xfb52@dial.pipex.com> To: Bob Willcox <bob@immure.com> Cc: Giorgos Keramidas <keramida@ceid.upatras.gr>, freebsd-questions@freebsd.org Subject: Re: How do I reinstall the FreeBSD bootmanager? Message-ID: <42CC07D1.7040706@dial.pipex.com> In-Reply-To: <20050706153223.GA18171@beatrix.daedalusnetworks.priv> References: <20050706152750.GA85937@luke.immure.com> <20050706153223.GA18171@beatrix.daedalusnetworks.priv>
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Giorgos Keramidas wrote:
>On 2005-07-06 10:27, Bob Willcox <bob@immure.com> wrote:
>
>
>>I need to reinstall the FreeBSD bootmanager on one of my systems and
>>was hoping someone can point me in the right direction on doing this.
>>I tried running /sbin/sysinstall but decided that I wasn't confident
>>enough of what I was doing to risk trashing my install.
>>
>>
>
>Its easy. Just run boot0cfg with the right options :-)
>
> # boot0cfg -B -v /dev/ad0
>
>
Depending on the disk and the bootable partitions you might also want
"-o packet"
packet Use the disk packet (BIOS INT 0x13 extensions)
interface,
as opposed to the legacy (CHS) interface, when
doing disk
I/O. This allows booting above cylinder 1023, but
requires specific BIOS support. The default is
`nopacket'.
I believe sysinstall may do this (whether always, or just under specific
conditions, I cannot say, but when I used boot0cfg without -o packet, I
couldn't boot partitions which I could boot after a sysinstall).
You can also use sysinstall (as you suggested). I posted instructions a
few weeks back so a search should turn them up, if you need them.
--Alex
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