Soft Reboot Errors - Sun Microsystems Sun Fire V60x Manual

If single-wide modules are installed in slots with higher numbers than double-wide
modules, you will encounter one of the following messages during POST while the
system is booting up:
Error 8508: A DIMM population error has been detected. Please
swap DIMM pair 1A/1B with DIMM pair 2A/2B.
Error 8509: A DIMM population error has been detected. Please
swap DIMM pair 1A/1B with DIMM pair 3A/3B.
Error 850A: A DIMM population error has been detected. Please
swap DIMM pair 2A/2B with DIMM pair 3A/3B.
When you see these messages during POST, shut down the system and reinstall the
DIMMs so that all of the single-wide DIMMs are in lower numbered slots than the
double-wide DIMMs.
Refer to "Memory" on page 5-9 for more information on how to correctly replace the
DIMMs.
2.2.11.2

Soft Reboot Errors

Note – This note applies if you are using BIOS Release 2.0 v1161 or earlier. This bug
has been fixed in the BIOS release 5.0 (v1175).
After issuing a Soft Reboot, there is very small probability that the memory will not
reset correctly. If the memory does not reset correctly, the system will log an error in
the System Event Log, disable the bank of memory that did not reset correctly, and
halt. Upon rebooting, the system will either appear to have no memory installed or
will BOOT with one of the memory banks disabled.
If this occurs, perform one of the following procedures to reset the system,
depending on how many DIMMs are in your system.
For Systems With Four or More DIMMs
1. Turn on the system.
2. Press the F2 key to select SETUP when the option appears on the screen.
3. In the main page of the SETUP menu, use the arrow keys to select the Advanced
menu.
2-16 Sun Fire V60x and Sun Fire V65x Servers—Troubleshooting Guide • November 2003