Use this procedure to boot a system that is currently at run level 0 to run level S.
If the system displays the Press any key to reboot prompt, press any key to reboot the system.
You can also use the Reset button at this prompt. If the system is shut down, turn the system on with the power switch.
The Current Boot Parameters menu is displayed after a few minutes.
If you do not make a selection within five seconds, the system is automatically booted to run level 3.
Type the superuser password, if prompted.
Verify that the system is at run level S.
# who -r . run-level S Jul 19 14:37 S 0 3
Perform the maintenance task that required the run level change to S.
After you complete the system maintenance task, type Control-D to bring the system to the multiuser state.
Press any key to reboot. Resetting... . . . Initializing system Please wait... <<< Current Boot Parameters >>> Boot path: /pci@0,0/pci-ide@7,1/ide@0/cmdk@0,0:a Boot args: Type b [file-name] [boot-flags] <ENTER> to boot with options or i <ENTER> to enter boot interpreter or <ENTER> to boot with defaults <<< timeout in 5 seconds >>> Select (b)oot or (i)nterpreter: b -s SunOS Release 5.10 Version amd64-gate-2004-09-30 32-bit Copyright 1983-2004 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. DEBUG enabled Booting to milestone "milestone/single-user:default". Hostname: venus NIS domain name is example.com Requesting System Maintenance Mode SINGLE USER MODE Root password for system maintenance (control-d to bypass): xxxxxx Entering System Maintenance Mode . . . # who -r . run-level S Jul 19 14:37 S 0 3 (Perform some maintenance task) # ^D