Originally Posted by manoj.linux
Red Hat 5.0(32bit) is detecting only 3GB RAM
On server 16GB Ram is there and 64bit HW architecutre is there but Red Hat 5.0 [32 bit] is able to detect 3gb,
Can u give me some idea why?
What Pix referenced above is correct, I think the kernel option is something like "big memory support" or "big ram support" in the kernel config. It's not part of the default config on most distributions however so likely you'll need to compile it in (if you want 32b linux). Better method as stated by others is to use 64b linux.