I added memory to my Redhat system to bring it up to 2 gigs. BIOS sees 2 gigs, but the OS only sees 1.
[root@db6 etc]# cat grub.conf
title Red Hat Linux (2.4.20-28.8smp)
kernel /vmlinuz-2.4.20-28.8smp ro root=LABEL=/
title Red Hat Linux-up (2.4.20-28.8)
kernel /vmlinuz-2.4.20-28.8 ro root=LABEL=/
I tried adding mem=2048M to the kernel line, but that doesn't do anything. I have an identical system with an older kernel that sees the memory without any problem. What do I need to do to see the memory?