ZFS not usable on FreeBSD-8.1

Roland Smith rsmith at xs4all.nl
Mon Aug 16 18:14:35 UTC 2010

On Mon, Aug 16, 2010 at 10:35:58AM +0200, Dick Hoogendijk wrote:
> On Mon, Aug 16, 2010 04:49  AM, Adam Vande More <amvandemore at gmail.com> wrote:
> > On Sun, Aug 15, 2010 at 1:45 PM, Dick Hoogendijk <dick at nagual.nl> wrote:
> > > My 500Gb drives won't however. they keep on giving cg); bad magic number.
> > > Sysinstall won't newfs the drives. newfs -U /dev/gm1a (created with the
> > > script mentioned before does not work OK either. Always this unexplained
> > > message (cg0: bad magic number). I have NO CLUE whatsoever what can be the
> > > cause of this. Both drives can be formatted by Windows, Linux and lots of
> > > other utilities. They can not be formatted UFS2 for / by FreeBSD-8.1/amd64
> > 
> > You can try to get your system up and running using something like
> > http://mfsbsd.vx.sk/ or pcbsd.  If that works, then I guess the possible
> > cause is you. :-)
> Good idea. I will give it a shot, although I'm pretty sure I'm not the
> cause.  I have four years experience as a (Open)Solaris system administrator
> and before that I used FreeBSD heavely. From the 4.10 series up to the 6.x
> series. So I do know something about the matter. But, we'll see... Keep you
> posted.

It could be that newfs is overwriting the partition table.
Can you post the output of 'gpart show <device>' and 'bsdlabel <device>s1'?

R.F.Smith                                   http://www.xs4all.nl/~rsmith/
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