Sun Microsystems Solaris 7 11/99, Hardware Platform Manual

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Chapter 4 Updating the Flash PROM on the Ultra 1, Ultra 2, Ultra 450, and Sun Enterprise 450 Systems 69
5. Next, the update script asks you if you want to continue. Type yes.
If any of the NVRAM configuration variables have been customized, the update
displays both the default value and the current value.
Are you sure that you wish to continue? yes/no :yes
**IMPORTANT** If the power fails during the firmware update that
is about to take place, it is possible that the customized values
in the NVRAM configuration variables will revert back to their
*default values* once the system power is restored. *If* this event
occurs then it could have a significant effect on the behavior of
the system after power is restored. Following is a list of the
system’s NVRAM configuration variables which have default values
and have been customized. You may wish to write this information
down so that the values may be restored after recovery from a power
loss.
Name: sbus-probe-list
Default: 01
Current: 10
Name: nvramrc
Default: <null>
Current: ." This is a sample message which indicates that nvramrc
has been modified." cr