You must have the console role (c) to complete this task.
Specify run level 0 to shut down the OS and display the OpenBoot prompt. The following example is from the SPARC M7-8 server.
# init 0
# svc.startd: The system is coming down. Please wait.
svc.startd: 136 system services are now being stopped.
syncing file systems... done
Program terminated
NOTICE: Entering OpenBoot.
NOTICE: Fetching Guest MD from HV.
NOTICE: Starting additional cpus.
NOTICE: Initializing LDC services.
NOTICE: Probing PCI devices.
NOTICE: Finished PCI probing.
SPARC M7-8, No Keyboard
Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
OpenBoot 4.37.3, 509.5000 GB memory available, Serial #105357064.
Ethernet address 0:10:e0:47:9f:14, Host ID: 12345f01.
{0} ok