First you should look at the Linux kernel
version. Try "uname -a" and if it bigger than
2.2.17 your RAM should be detected correctly.
If not, (I had this problem) the "append will
not work. The posible problem is the
difference in the RAM modules maybe. That are
your modules ? Are the exactly the same ? If
not (or even thay are) try to configure the
BIOS setup. There is some choses about the
RAM and just try them ! I made my Linux
detect the RAM corectly after setting PARITY
and someother choses. As far as I know from
my experience with Linux the first thing you
should look if something is not working, but
it should work --- BIOS. Lastimes BIOS is the
last chance.
Best Regards,
Rokas Ratkevicius