Hello all,

I have been battling an issue for a couple of days and I have it down to 2 possibilities. Memory or mobo. A server in the DC is being very sketchy. Sometimes it will boot fine, sometimes it will boot but will not show all the memory, and sometimes it will hang before it even posts. I have replaced just about everything inside the system except for the memory and the mobo.

I would like to test the memory before replacing either because both are a few hundred dollars. The problem is, the memory doesn't log any errors and running a memory test with ubcd doesn't work because it's ecc memory.

I thought I remembered hearing that there is a way to run a memory test during a Centos or RHEL installation, but I can't figure out how.

The memory is
DDR2 667 FB-DIMM

and the board is
Tyan S5380

any thoughts or help is much appreciated
thanks

Hi,

I'm not sure which UBCD in use. If current then 'memtest86+' should be available. If older version then use 'memtest86+' to test. I would not rely on POST memory test as the final say. If you have a MB problem, the memtest86+ may show errors anyway.

thanks for that. unfortunately i got caught up and won't have time to test it until monday morning. i'll be sure to post my results then

update

i was able to use memtest86+ to test the memory. memory tested fine. turned out to be a bad board that was causing all the instability. by the way, i was able to find out how to run a memory test using a CentOS install disk. 5.6 uses memtest86-not memtest86+-but all you have to do is type in memtest86 at the initial screen.

thanks again