If a board is on the disabled board list, an attempt to connect the board may produce an error message:
# cfgadm -c connect sysctrl0:slotnumber cfgadm: Hardware specific failure: connect failed: board is disabled: must override with [-f][-o enable-at-boot]
To override the disabled condition, use the force flag (-f) or the enable option (-o enable-at-boot) with the cfgadm command:
# cfgadm -f -c connect sysctrl0:slotnumber
# cfgadm -o enable-at-boot -c connect sysctrl0:slotnumber
To remove all boards from the disabled board list, set the disabled-board-list variable to a null set with the system command:
# eeprom disabled-board-list=
If you are at the OpenBootTM prompt, use this OBP command instead to remove all boards from the disabled board list:
OK set-default disabled-board-list
For further information about the disabled-board-list setting, refer to the section "Specific NVRAM Variables" in the Platform Notes: Sun Enterprise 3x00, 4x00, 5x00, and 6x00 Systems, part number 805-4454.