Moving root on ZFS on GELI so GELI is no longer used

[Kralj Karlo]

I selected the installer option for putting root on ZFS on GELI.
I want to switch the system so that GELI is not used. (That is,
the zpool should be on the disk directly.)

I figure I will replicate the zpool (currently a mirror of two GELI
devices) to the new disk and also do something so that the boot stuff
is on the disk and the boot stuff does not point to the GELI disk.
The part I don't know how to do is changing the boot stuff.

Are there directions on how to do this? If there is nothing specific,
could you suggest which manual pages I should read?

Cordially,
Karlo