On Fri, 7 Sep 2001, Gene Buckle wrote:

> I've got a SS10 that I want to upgrade to SMP.  Both CPUs are
> SM41s.  Individually they operate just fine, but when both are installed,
> the machine won't even initialize.  The jumper settings are in "mode
> a" according to the SS10 service manual.  Any ideas as to why it won't
> operate with both CPUs installed?  The motherboard is the 3 jumper style.

Are they both identical mbus modules?  look at http://mbus.sunhelp.org/
for notes & special information on the modules that you have.