[OpenIndiana-discuss] Destroying unavailable ZFS dataset

[Michelle Knight]

Hi Folks,

I'm having problems; an old system drive seems to have a memory of a
dataset that is long gone. Obviously this information has survived
partition editing, but it is driving me nuts.

I can't zfs destroy it by ID because it isn't available. I also can't
mount it even using -f and the ID, because none of the volumes exist any
more.

How do I tell the system to forget about this dataset please?

Many thanks,

Michelle.