To accommodate release/machine differences, /mnt/noasks is now /mnt/livecd-config/RELEASE/MACHINE/noasks.
usbfadm newdrive will create the noasks file in the new location.
For backward compatibility, /boottmp/rc will read the noasks into either the old or new location at boot time.
If there are noasks in both the old and new locations, rc will display a warning message and stop the non-interactive boot.