SPARC: How to Change the Default
Boot Device by Using the Boot PROM
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.
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Change to run level 0.
# init 0
The ok PROM prompt is displayed. For more information, see theinit(1M) man page.
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Change the value of the boot-device parameter.
ok setenv boot-device device[n]
Use one of the probe commands if you need help identifying the disk number.
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Verify that the default boot device has been changed.
ok printenv boot-device
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Save the new boot-device value.
ok reset-all
The new boot-device value is written to the PROM.
Example 11–2 SPARC: 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 /pci@1f,4000/scsi@3/disk@1,0 boot-device = /pci@1f,4000/scsi@3/disk@1,0 ok printenv boot-device boot-device /pci@1f,4000/scsi@3/disk@1,0 ok boot Resetting ... screen not found. Can't open input device. Keyboard not present. Using ttya for input and output. Sun Enterprise 220R (2 X UltraSPARC-II 450MHz), No Keyboard OpenBoot 3.23, 1024 MB memory installed, Serial #13116682. Ethernet address 8:0:20:c8:25:a, Host ID: 80c8250a. Rebooting with command: boot disk1 Boot device: /pci@1f,4000/scsi@3/disk@1,0 File and args: |
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: |
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