help with ram question

[fedora-list at epperson.homelinux.net]

On Thu, May 31, 2007 20:52, Les wrote:
> On Thu, 2007-05-31 at 11:51 -0700, Paula J. Lindsay wrote:
>> I've just installed a fc5 machine.  He needs this rev because it is
>> compatible with his bruker software.
>> Anyway, he already had 1 gig of memory in the machine, but when we put
>> another bank of memory (1 gig)
>> we could not boot up.  We did a switch and they (both 1 gig dimms) and
>> they both work apart, but not
>> together.  Has anyone ran into this problem?  I guess I could look on
>> fedoraproject.org to see if fc5
>> supports 2 gigs of ram.  Anyway, any suggestions/advice/opinions are
>> appreciated.  Thank you in advance.
>
> If it is an older machine check the BIOS.  It may not support the added
> ram, or there may be some hardware switch or jumper required.

I vaguely recall this happening with some machine and some FC version, and
that specifying mem=2GB made it work.  YMMV