4-5
4.4 Removing and Replacing the Boot PROM
Warning: Record NVRAM configuration parameters (especially those that are non-standard) before
installing the new boot PROM(s), as the new boot PROM(s) will reset values to the default setting. To print
NVRAM configuration parameters type:
eeprom | lp
(for systems running Solaris 2.x) or
eeprom | lpr
(for systems running SunOS)
Resetting NVRAM parameters to their defaults includes turning on diagnostic mode and setting the default
diagnostic boot device to network.
Use the following command to turn off the diagnostic switch:
setenv diag–switch? false
Note: Replacing the boot PROM will
not change the system’s host id.
Caution: Use ESD kit P/N 250-1088 (or equivalent) when installing integrated circuits, printed circuit boards,
and drives in a SPARCstation 20. ESD kit P/N 250-1088 contains the approved ESD mat that has 0.25” of
cushioning to protect underside components, prevent board flexing, and provide ESD protection.
Follow the instructions printed on the ESD mat and use the wrist grounding strap.
1. Refer to Figure 4-5. If you have an SBus card covering the boot PROM, remove it and set it aside on
the antistatic mat.
SBus Card
boot PROM
Figure 4-5. Removing an SBus card
Summary of Contents for hyperSPARC
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