gmirror usage on 6.1 RELEASE?

[stan]

I'm trying to set up a new machine (Sun Ultra 40) with a mirrored system disk.
But I'm having a bit of a problem with the inital gmirror command.

Acording to the Handbook, I should be able to do something like:

gmirror lable -vnb round-robin load rootfs /dev/ad4

( /dev/ad4 is the boot disk) 

But when I do this, I get an error message with the syntax of gmirror.
I'm doing this while booted from the 6.1 RELEASE CD (1) and after having 
kldloadeded geom_mirror

Anyone got any ideas here?


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