Boot PROM Commands

ok go -- To comeout of PROM prompt

ok banner -- Shows system configuration

ok printenv -- Shows all variables

ok reset-all -- Will save the changes and clear the buffer & reboot the system

ok .registers -- Displays the contents of the registers

ok show-devs -- Shows all device with physical path
ok devalias -- Shows currently available devices

-- In sparc if we change values. There is no option to come out without saving.

ok probe-ide -- Shows ide details and device connected
ok probe-scsi -- Shows scsi details and device connected
ok probe-scsi-all -- Identifies devices on all all SCSI buses
ok probe-fcal-all -- Identifies devices on all fibre channel loops

ok nvalias /pci@if,......................
ok nvunalias -- To delete alias name

ok show-disks -- Desplays and allows a selection of device paths
ok show-ttys
ok show-displays
ok show-nets
ok show-tapes

ok help -- Shows list of help
ok help floppy eject
ok test -- Runs self-test on specified systems

ok sync -- Manually attempts to flush memory and synchronize FS

ok boot -- Boot the system
ok boot –r -- Detect new devices (Reconfiguration boot)
ok boot –s -- Single user mode
ok boot –v -- Verbose mode – boot the system and shows the background details
ok boot –a -- Interactive mode. Prompt user for user input for all the process at boot time
ok boot –rv (or) –sv

ok printenv auto-boot?
auto-boot?=false
ok printenv boot-device -- To know the variable details
boot-device=disk
ok setenv auto-boot? True -- To change value to true for “auto-boot?” variable
auto-boot?=true
ok printenv diag-switch?
Diag-switch?=false
ok setenv diag-switch? True

ok set-defaults -- Reset all settings to factory default
ok setenv boot-device disk cdrom net
ok set-default boot-device -- Will reset the default value of boot-device variable

ok power-off -- Will switch off the system immediately


Inside OS

# eeprom -- Equivalent to printenv
# eeprom auto-boot
Auto-boot?=true
# eeprom auto-boot?=false
# eeprom diag-switch?=true