> What are the limits on GPT in OpenSolaris?  It seems strange that a
> format that is able to support up to 128 partitions should be limited
> to six ...
>   
In opensolaris, 9 slices are supported. Slice 0-6 are for user data.
Slice 7 is used to represent the whole disk. Slice 8 is reserved. If you
run format -e/partition/print, you will see the reserved slice. (Only if
the EFI label is created under solaris). And, if you run ls -l
/dev/rdsk/c4t0d0* instead of c4t0d0s*, you can see the minor node wd,
which is actually represented by slice 7.

However, prtvtoc(1M) and format(1M) provide the ability to SHOW the EFI
label with more than 9 partitions created in other system. The maximum
number is MAX_PARTS. This is to show to user that there are partitions
on the disk already and to avoid the loss of user data. Solaris doesn't
actually create minor node for them.

Larry

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