ok boot -s
.
.
.
SunOS Release 5.9 Version Generic 64-bit
Copyright (c) 1983-2002 by Sun Microsystems, Inc.
configuring IPv4 interfaces: le0.
Hostname: earth

INIT: SINGLE USER MODE

Type control-d to proceed with normal startup,
(or give root password for system maintenance): xxx
Sun Microsystems Inc.   SunOS 5.9  Generic May 2002
# who -r
   .       run-level S  Jul 14 11:37     3      0  ?
(Perform some maintenance task)
# Press Control-D