Hi all,

I did an install of OpenSolaris in which I specified that the whole disk should 
be used for the installation. Here is what "format> verify" produces for that 
disk:

Part      Tag    Flag     Cylinders         Size            Blocks
  0       root    wm       1 - 60797      465.73GB    (60797/0/0) 976703805
  1 unassigned    wm       0                0         (0/0/0)             0
  2     backup    wu       0 - 60797      465.74GB    (60798/0/0) 976719870
  3 unassigned    wm       0                0         (0/0/0)             0
  4 unassigned    wm       0                0         (0/0/0)             0
  5 unassigned    wm       0                0         (0/0/0)             0
  6 unassigned    wm       0                0         (0/0/0)             0
  7 unassigned    wm       0                0         (0/0/0)             0
  8       boot    wu       0 -     0        7.84MB    (1/0/0)         16065
  9 unassigned    wm       0                0         (0/0/0)             0

I have several questions. First, what is the purpose of partitions 2 and 8 
here? Why not simply have partition 0, the "root" partition, be the only 
partition, and start at cylinder 0 as opposed to 1?

My second question concerns the disk I have used to mirror the first root zpool 
disk. After I set up the second disk to mirror the first one with "zpool attach 
-f rpool c3t0d0s0 c4t0d0s0", I got the response

Please be sure to invoke installgrub(1M) to make 'c4t0d0s0' bootable.

Is that correct? Or do I want to make c4t0d0s8 bootable, given that the label 
of that partition is "boot"? I cannot help finding this a little confusing. As 
far as i can tell, c4t0d0s8 (as well as c3t0d0s8 from the original disk which I 
mirrored), cylinder 0, is not used for anything.

Finally, is the correct command to make the disk I have added to mirror the 
first disk bootable

"installgrub -m /boot/grub/stage1 /boot/grub/stage2 /dev/rdsk/c4t0d0s0" ?
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