Linux Hugemem Kernels

Linux Hugemem Kernels

For using 4 GB or more RAM with Linux 32 bit in RHEl5,Linux kernel should be compiled with PAE capable machines.The kernel provide support for upto 64GB of high memory.

Install PAE kernel
kernel-PAE-2.6.18-8.el5.i686.rpm

Verify the initial RAM disk image
To verify that an initial RAM disk already exists,
use the command ls -l /boot to make sure the initrd-.img file was created

Verify the boot loader
#cat /boot/grub/grub.conf | grep PAE

Edit /etc/grub.conf to make sure to new kernel as default.