booting from wrong disk

Polytropon freebsd at
Thu Oct 15 18:06:28 UTC 2009

On Thu, 15 Oct 2009 12:13:08 -0400, PJ <af.gourmet at> wrote:
> add another thought...
> If I change the mbr on the ad12 then mount ad4s1a to /mnt copy
> /mnt/boot/boot0 to /boot/boot0.tmp and then copy the modified
> /boot/boot0 (for ad4) back to /mnt/boot/ and then umount ad4s1a --- I
> should be ok, OK? Have I got it?

Why not just remove the "active" marking from the disk you do
not want to be booted from? Furthermore, I'm not sure if the
desired operation can be performed UFS-file-wise...

The easiest way really is to use sysinstall. It's the lazy man's
swiss army knife. :-)

Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...

More information about the freebsd-questions mailing list