Choosing ZFS during install results in a system that cannot mount root
Choosing the ZFS option results in a system that starts to boot, but cannot mount the root slice because it doesn't know ZFS.
Trying to mount root from zfs:zroot/ROOT/default ... Mounting from zfs:zroot/ROOT/default failed with error 2: unknown file system
I can force it to mount by running the following at a loader prompt:
load /boot/kernel/kernel load /boot/kernel/opensolaris.ko load /boot/kernel/zfs.ko
If I then edit loader.conf and add lines to load the modules, it will boot automatically: