SPARC: How to Change the Default Boot Device

You might need to identify the devices on the system before you can change the default boot device to some other device. For information on identifying devices on the system, see SPARC: How to Identify Devices on a System.

1. Become superuser.

2. Change to run level 0.

   # init 0

   
   

   The ok PROM prompt is displayed.

   For more information, see init(1M).

3. Change the value of the boot-device parameter.

   ok setenv boot-device device[n]

   
   

   boot-device	Identifies the parameter for setting the device from which to boot.
   device[n]	Identifies the boot-device value such as a disk or the network. The n can be specified as the disk number.

   Use one of the probe commands if you need help with identifying the disk number.

4. Verify that the default boot device is changed.

   ok printenv boot-device

   
   

5. Save the new boot-device value.

   ok reset

   
   

   The new boot-device value is written to the PROM.

SPARC: Examples--Changing the Default Boot Device

In this example, the default boot device is set to disk.

# init 0
# 
INIT: New run level: 0
.
.
.
The system is down.
syncing file systems... done
Program terminated
ok setenv boot-device disk
boot-device =         disk
ok printenv boot-device
boot-device           disk                    disk
ok reset
Sun Ultra 5/10 UPA/PCI (UltraSPARC-IIi 333MHz), No Keyboard
OpenBoot 3.15, 128 MB memory installed, Serial #number.
Ethernet address number, Host ID: number.

Boot device: disk  File and args:
SunOS Release 5.9 Version 64-bit
.
.
.
pluto console login:

In this example, the default boot device is set to the network.

# init 0
# 
INIT: New run level: 0
.
.
.
The system is down.
syncing file systems... done
Program terminated
ok setenv boot-device net
boot-device =         net
ok printenv boot-device
boot-device           net                    disk
ok reset
Sun Ultra 5/10 UPA/PCI (UltraSPARC-IIi 333MHz), No Keyboard
OpenBoot 3.15, 128 MB memory installed, Serial #number.
Ethernet address number, Host ID: number.



Boot device: net  File and args:
.
.
.
pluto console login:

SPARC: How to Reset the System

Run the reset command from the ok prompt.

ok reset

This self-test program, which runs diagnostic tests on the hardware, is executed and the system is rebooted.

SPARC: Booting a System

If a system is turned off, turning it on starts the multiuser boot sequence. The following procedures show how to boot to different run levels from the ok PROM prompt. These procedures assume that the system has been cleanly shut down, unless stated otherwise.

Use the who -r command to verify that the system is brought to the specified run level. For a description of run levels, see Chapter 11, Run Levels and Boot Files (Tasks).

SPARC: How to Boot a System to Run Level 3 (Multiuser Level)

Use this procedure to boot a system that is currently at run level 0 to run level 3.

1. Boot the system to run level 3.

   ok boot

   
   

   The automatic boot procedure displays a series of startup messages, and brings the system to run level 3.

   For more information, see boot(1M).

2. Verify that the system has booted to run level 3.

   The login prompt is displayed when the boot process has finished successfully.

   hostname console login:

   
   

SPARC: Example--Booting a System to Run Level 3 (Multiuser Level)

The following example displays the messages from booting a system to run level 3.

ok boot
Sun Ultra 5/10 UPA/PCI (UltraSPARC-IIi 333MHz)
OpenBoot 3.15, 128 MB memory installed, Serial #number.
Ethernet address number, Host ID: number.

Rebooting with command: boot
Boot device: disk:a  File and args: 
SunOS Release 5.9 Version Generic 64-bit
Copyright (c) 1983-2002 by Sun Microsystems, Inc.
configuring IPv4 interfaces: hme0.
Hostname: starbug
The system is coming up.  Please wait.
checking ufs filesystems
/dev/rdsk/c0t0d0s7: is clean.
/dev/rdsk/c0t0d0s4: is clean.
NIS domainname is Solar.COM
starting rpc services: rpcbind keyserv ypbind done.
Setting netmask of hme0 to 255.255.255.0
Setting default IPv4 interface for multicast: add net 224.0/4: 
gateway starbug
syslog service starting.
Print services started.
volume management starting.
The system is ready.

starbug console login: