Sun Microsystems Solaris 7 11/99 Hardware Platform Manual page 74

Note – For step-by-step instructions, follow the procedures beginning with "To
Capture the Configuration Variable Settings" on page 62.
After installing the Solaris 7 operating environment on your hardware, set the
write-protect/enable flash PROM jumper to the write-enable position (Sun Ultra 1
and Ultra 2 systems) before you attempt to update the firmware in the flash PROM.
To change the write protection state of the Sun Enterprise 450 system, turn the
external front panel keyswitch.
Refer to the recovery procedure covered later in this chapter if there is a power
interruption during the update process.
Return the write-protect/enable jumper (Sun Ultra 1 and Ultra 2 systems) to the
write-protect position after updating the firmware in the flash PROM.
When your system has been updated to the proper firmware revision, you can run
the Solaris 7 software in 64-bit mode.
Capturing Configuration Variable Settings
While the Solaris operating environment is still running, capture the NVRAM
configuration variable settings before you install the Solaris 7 operating environment
or begin the flash PROM update process. This will enable you to restore customized
settings if there is a problem during the flash PROM upgrade.
To Capture the Configuration Variable Settings
1. Using the eeprom utility, capture the system's configuration variable settings in a
file. The filename is any file name you choose.
% eeprom > filename
Note – If you have custom values installed in oem-logo or keymap, those values
cannot be displayed or printed properly by the eeprom utility because the contents
contain binary information. If it is necessary to restore these values after a power
loss, you should determine the original method by which these values were placed
into NVRAM and use that method to restore the values.
62 Solaris 7 11/99 Sun Hardware Platform Guide • November 1999