OBP commands

• 1 Open Boot User Interface
• 2 Boot Commands
• 3 Navigate around the Device Tree
• 4 Alias Commands
• 5 Emergency STOP Commands
• 6 Configuration Variable Commands
• 7 Some common used Configuration Variables
• 8 Open Boot Commands
• 9 How to run POST
• 10 How to use OBDiag

• Open Boot User Interface

How to get to the OK Prompt
You can shutdown the system using init 0
Reboot the system and press the STOP and A keys together as the boot time messages appear on the screen

Press the STOP and A keys together (use as a last resort)

when you are not on the console (video + keyboard) and use some terminal emulator to via serial port or other similar solution you can use special command to send BREAK signal. For example on TeraTerm Pro use Control->Send Break or press Alt-B

• Boot Commands

These are used from the OK Prompt to boot the system into the mode you desire
Boots the system using device disk boot disk
Boots the system using a bootable CD in the CDROM drive boot cdrom
Performs a reconfiguration reboot boot –r
Boots to single user level boot –s
Verbose mode displays messages being sent to log boot –v
Don’t boot in clustered mode (if appropriate)boot –x
Prompt for user input as to kernel to boot etc boot –a

• Navigate around the Device Tree

Enter the Device Tree cd
Displays properties for current node in the tree .properties
Displays devices attached to current node ls
Displays name of current node in tree pwd
Sets node to machine node dev /
Sets node to device dev device
Sets node to parent of current node dev ..
Displays all devices (or all the devices below specified node) show-devs
Leaves the device tree device-end

• Alias Commands

Displays all defined aliases devalias
Creates an alias devalias alias device-path
Stores a devalias command in non volatile memory nvalias alias device-path
Removes stored devalias command nvunalias alias device-path

• Emergency STOP Commands

Aborts OS boot or Halts machine Pressing STOP and A Keys
Sets diagnostic mode ( diag-switch? True ) Pressing STOP and D Keys
Sets configuration variables to default value Pressing STOP and N Keys

• Configuration Variable Commands

Displays all the configuration variables printenv
Sets variable to value setenv variable value
Displaying / changing variables once Solaris is running eeprom
Resets all variables to default value set-defaults
Resets variable to its default value set-default variable

• Some common used Configuration Variables

defaults are shown in brackets
Determines is Solaris boots on power up variable auto-boot? value (true) | false
Boot device if diag-switch?=false variable boot-device value disk , disk:a
Sets diagnostic mode variable diag-switch? value true | (false)
Determines detail level of POST etc variable diag-level value min | (max)
Boot device if diag-switch?=true variable diag-device value net
Manufacturing mode used for OBDiag variable mfg-mode value on | (off )
Defines target ID of SCSI initiators variable scsi-initiator-id value 0-15 (7)

Open Boot Commands

• Provides details of devices on SCSI buses probe-scsi
• Runs device self test (if available) test device
• Runs all device self test methods available test-all
• Tests net device and monitors for bad packets watch-net
• Test the real time clock chip watch-clock
• Display help about OBP commands help
• Display help about a category (categories inc. boot, system,diag, devalias etc) help category
• Display help about a command help command
• Resets entire system - similar to a power cycle reset-all
• flushes disk buffers to disk sync
• eject the floppy eject-floppy
• Powers off the system (similar to SHIFT & power key) power-off
• Antidote to STOP A go
• Displays banner with lots of useful info banner
• Shows CPU and PCI bus speeds .speed
• Displays devices attached to system SBUS show-sbus
• Shows OBP version .version
• Display IDPROM contents formatted idprom

How to run POST

• Set diagnostic mode on by either:
• setenv diag-switch? true ( turn on diagnostic mode)
• Turn diagnostic key (if fitted) to on
• Press STOP and D keys while machine is powering on
• Power cycle the machine
• Beware, when POST is running (and it takes ages) nothing is displayed on any attached screen, in fact the system looks pretty dead.
• The only sign that POST is in progress is the CAPS LOCK LED on the keyboard flashes occasionally.
• Monitor progress using a serial link to Serial port A and HyperTerminal

How to use OBDiag

• Set configuration variables as follows:
• setenv mfg-mode on ( turn on manufacture mode)
• setenv diag-switch? true ( turn on diagnostic mode)
• setenv auto-boot? false ( stop Solaris booting )
• reset-all ( reset the system)
• Issue OBDiag command to start Open Boot Diagnostic menu tool
• Once you have finished reset variables to original values and reset-all