.........................Contents


1. OpenBoot 3.x Commands 1
..Environmental Monitoring 1
.....`disable-environmental-monitor 1`
.....`enable-environmental-monitor 2`
..Messages Indicating Environmental Conditions 2
..Resetting and Power Cycling the System From a Remote Console 3
..Externally Initiated Reset XIR 4</>
..· To Initiate an XIR: 4</>
..· To Display This XIR Information: 4
..Hardware Watchdog 5
..Flash PROM Management 5
.....`flash-update-system 5`
.....`prom-copy 6`
.....`update-proms 6`
..System Configuration and Diagnostic Information 7
.....prtdiag(1M) Options 7
..TOD Clock Management 8
.....`copy-clock-tod-to-io-boards 8`
.....`copy-io-board-tod-to-clock-tod 8`


..Specific NVRAM Variables 9
.....`configuration-policy 9`
.....`disabled-board-list 9`
.....`disabled-memory-list 10`
.....memory-interleave 11
.....`sbus-probe-default 11`
.....`sbus-specific-probe 12`
2. Board Hot-Plug Software and Dynamic Reconfiguration 13
..Disabled System Board 14
..· To Swap Out a Disabled Board 14
..Activated System Board 15
.....To Swap Out an Activated Board 15
..Disabling Hardware 15
..· To Disable a Defective Board 16
..Alternate Pathing 17
3. CPU Over-Temperature Safeguard 19
..COS Requirements 19
..Factors in Overheating 20
..COS Operation 20
.....Resolving an Over-temperature Condition 21
..· To Resolve an Over-temperature Condition 21
.....Failure to Offline CPUs 22
.....Failure to Power off CPUs 22