backup drive bootabel
admin2 at enabled.com
Wed Nov 26 06:39:44 PST 2003
On Thu, 13 Nov 2003 10:05:04 +0000, Matthew Seaman wrote
> On Wed, Nov 12, 2003 at 02:32:20PM -0800, Noah wrote:
> > > i) Make the 2nd disk an identical copy to the 1st one. In this case
> > > should the 1st drive go AWOL, you would have to open the case and
> > > either remove the first drive or modify the jumpering on the disks to
> > > swap their order on the bus. You will need to mark the FreeBSD slice
> > > bootable in the disk partition label by running:
> > >
> > > # boot0cfg -B -b /boot/mbr -s 1 da1
> > okay this is the command I was Looking for but I am arriving at an error:
> > # boot0cfg -B -b /boot/mbr -s 1 da1
> > boot0cfg: /boot/mbr: unknown or incompatible boot code
> > I think the partitions are about the same so I am not clear why this is
> Hmmm... What FreeBSD version are you using? I had assumed 4.x,
> because that's what I'm using. It may well be the case that the
> sample mbr has been moved somewhere else in the filesystem.
> Checking the fdisk(8) and boot0cfg(8) man pages for clues doesn't
> confirm that though.
I am using FreeBSD 4.8 Stable
# boot0cfg -B -b /boot/mbr -s 1 da1
boot0cfg: /boot/mbr: unknown or incompatible boot code
# ls -l /boot/mbr
-r--r--r-- 1 root wheel 512 Aug 24 14:26 /boot/mbr
so I am not clear what the issue is here?
the disk is a little bit of a different size with different partition sizes.
woudl that Make a difference. what esle can I check here?
> The mbr should be a 512 byte file generated from the assembler
> sources in /usr/src/sys/boot/i386/mbr
> 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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