ZFS not usable on FreeBSD-8.1

Dick Hoogendijk dick at nagual.nl
Tue Aug 17 09:06:08 UTC 2010

  On 16-8-2010 20:14, Roland Smith wrote:
> It could be that newfs is overwriting the partition table.
> Can you post the output of 'gpart show<device>' and 'bsdlabel<device>s1'?
westmark# gpart show ad8
=>       63  976773105  ad8  MBR  (466G)
          63  976773105    1  freebsd  [active]  (466G)

westmark# bsdlabel ad8s1
# /dev/ad8s1:
8 partitions:
#        size   offset    fstype   [fsize bsize bps/cpg]
   a:  2097152        0    4.2BSD        0     0     0
   b: 12582912  2097152      swap
   c: 976773105        0    unused        0     0         # "raw" part, 
don't edit
   d: 16777216 14680064    4.2BSD        0     0     0
   e: 41943040 31457280    4.2BSD        0     0     0
   f: 903372785 73400320    4.2BSD        0     0     0

I dumped/restored the system to ad8 yesterday and booted from it.
The system *did* boot but (alas) the /dev/ads1a(f) slices were mounted. 
So, the system loaded the *old* root partitions (from the first drive). 
After googling and reading I think I need *boot0cfg* but I'm a bit scary 
to ruin my new boot (ad8) drive.

So, what is the exact syntax to make my system not only boot from ad8, 
but also mount the /deb/ad8s1 slice as root slice?

After that I can remove my old ata drive and hopefully my zfs errors are 
gone too then. ;-)

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