Matt, On 27 August 2010 16:26, Matt <lm7812 at gmail.com> wrote: > I have a box running CentOS 5.x 32 bit. I noticed these kernels are installed. > > [root at ns1 log]# rpm -qa |grep kern |sort > kernel-2.6.18-194.11.1.el5 > kernel-2.6.18-194.3.1.el5 > kernel-2.6.18-194.8.1.el5 These are stock kernel. If you had these, you'd have PAE kernels: kernel-PAE.i686 : The Linux kernel compiled for PAE capable machines. kernel-PAE-devel.i686 : Development package for building kernel modules to match the PAE kernel. > kernel-PAE-devel-2.6.18-194.11.1.el5 > kernel-PAE-devel-2.6.18-194.3.1.el5 > kernel-PAE-devel-2.6.18-194.8.1.el5 These are just headers and shouldn't do any harm. Name : kernel-PAE-devel Arch : i686 Version : 2.6.18 Release : 194.11.1.el5 Size : 5.4 M Repo : updates Summary : Development package for building kernel modules to match the PAE kernel. URL : http://www.kernel.org/ License : GPLv2 Description: This package provides kernel headers and makefiles sufficient to build modules : against the PAE kernel package. And this is the PAE kernel info (all from yum info) Name : kernel-PAE Arch : i686 Version : 2.6.18 Release : 194.11.1.el5 Size : 17 M Repo : updates Summary : The Linux kernel compiled for PAE capable machines. URL : http://www.kernel.org/ License : GPLv2 Description: This package includes a version of the Linux kernel with support for up to : 16GB 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. -- Hakan (m1fcj) - http://www.hititgunesi.org