Useful Sun OpenBoot Prom (OBP) commands

At power on: (useful reference)

Stop-A : stop the boot process, takes you to OBP ok prompt

Stop-N : reset to default NVRAM values

From go prompt (from article here):

  • to enable POST diags, not sent to monitor but sent via serial connection to a terminal or terminal emulator
setenv diag-switch? true

Turn off again with false

  • Turn off configured boot drive:
setenv auto-boot? false 

true to enable again

  • Manually boot from given device:
boot disk
boot cdrom

where disk and cdrom are device aliases that you can view with


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