ludelete c4t0d0s0
The boot environment <c4t0d0s0> contains the GRUB menu.
Attempting to relocate the GRUB menu.
/usr/sbin/ludelete: lulib_relocate_grub_slice: not found
ERROR: Cannot relocate the GRUB menu in boot environment <c4t0d0s0>.
ERROR: Cannot delete boot environment <c4t0d0s0>.
Unable to delete boot environment.