hello
i have a sun server V890 and it stops booting after adding 2 CPUs modules and gives me the following error message:
Enabling system bus....... Done
Initializing CPUs......... Done
Initializing boot memory..
RAM-Copy CRC failure!Can't start: No image found
FATAL: Can't find/decompress Forth/OpenBoot dropin module
OpenBoot Re-Configuration Reset Executing POST w/%o0 = 0000.0800.0201.2041
FATAL: POST not found or image corrupted in this PROM
the problem countinued to appear also after removing the new modules
please could you help me find and solve the problem ...... thanx
can you reach "ok" prompt?
no , the message keep appearing in a cycle and we cant reach the ok prompt
please try a complete powercycle (pull the power-cords and wait 30 seconds...) of the system.
first thank u for help
we have tried and leave the server without power for more than 30 s
and we are wondering if the nvram (openboot prom) is damaged, or is the system controller card has a problem
i think you used two different versions of FW on the old and the new cpu boards... this is causing the problem... but i've no idea how to fix it without booting from cd/net and redo an OBP update...
If the NVRAM is socket mounted - which I think it is - try removing and reseating it.
You can also look at the openboot source to try and figure out what is going on. See http://code.coreboot.org/p/openboot/source/tree/HEAD/trunk/obp. It is for OBP 4.23 which is probably close to what you have.
could you please tell me how to reset the NVRAM after removing it from the server ??
fpmurphy said that you should "reseat" the module, meaning you should put it back into the socket 
I have had a similar problem on a V880. I took everything out, and the backplane had a bad connection somehow over the years of service. I completely stripped the server hardware wise, put it all back together and it worked fine again after that.
If these NVRAM solutions dont work, you can try something like this. Hope you get your system fixed.
It is fairly common to unseat some other component when adding boards to a system.
please help
does a cpu/memory module have a firmware ?? and do i need to check it before install the cpu/memory module in the motherboard ??
thnx
in case of a v8x0 server you don't need to check the FW level for cpu/mem boards. but before inserting the new hardware, do a complete powerdown (pull cables) for the server.