# uname -r
2.6.18-8.1.3.el5
# yum info kernel-PAE
Available Packages
Name : kernel-PAE
Summary: The Linux kernel compiled for PAE capable machines.
Description:
This package includes a version of the Linux kernel with support for up to
64GB of high memory. It requires a CPU with Physical Address Extensions (PAE).
The non-PAE kernel can only address up to 4GB of memory.
Install the kernel-PAE package if your machine has more than 4GB of memory.
# yum install kernel-PAE
Q:how do you enable the PAE kernel after you reboot?
A:Just install kernel-PAE and boot it. This kernel is PAE-enabled.
Then ensure the followings:
#cat /etc/sysconfig/kernel
# UPDATEDEFAULT specifies if new-kernel-pkg should make
# new kernels the default
UPDATEDEFAULT=yes
# DEFAULTKERNEL specifies the default kernel package type
DEFAULTKERNEL=kernel-PAE
After the server reboot PAE kernel will be enabled and it will automatically detect/handle more than 4GB of RAM.
To get updates follow us on Facebook, Twitter, LinkedIn
Subscribe to get free blog content to your Inbox
