[BlueOnyx:07621] How do I enable the extra 4gb of memory I have......

[Support]

I have installed the PAE kernel with;

yum install kernel-PAE

... and then I edited /boot/grub/grub.conf and set;

default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS (2.6.18-238.12.1.el5PAE)
        root (hd0,0)
        kernel /vmlinuz-2.6.18-238.12.1.el5PAE ro root=/dev/VolGroup00/root
        initrd /initrd-2.6.18-238.12.1.el5PAE.img
title CentOS (2.6.18-238.12.1.el5)
        root (hd0,0)
        kernel /vmlinuz-2.6.18-238.12.1.el5 ro root=/dev/VolGroup00/root
        initrd /initrd-2.6.18-238.12.1.el5.img
title CentOS (2.6.18-238.9.1.el5)
        root (hd0,0)
        kernel /vmlinuz-2.6.18-238.9.1.el5 ro root=/dev/VolGroup00/root
        initrd /initrd-2.6.18-238.9.1.el5.img

But I see;

Kernel Version	2.6.18-238.12.1.el5PAE (SMP)

In Hardware Information and in 'free' I see;

             total       used       free     shared    buffers     cached
Mem:       4086620     288768    3797852          0      18996     152596
-/+ buffers/cache:     117176    3969444
Swap:      4194296          0    4194296

... so I assume that I have only 4GB memory used.

Not sure what to do next, does anyone have any suggestions?

Oh and the hardware: DL360G4 with 8GB memory and dual 3.4 processors.

Tony