Here is the Quick HOWTO Steps to upgrade the Kernel in Linux..
Steps:
1. Update the kernel
a. use 'uname -a' to reveal current version
b. use 'rpm -qa | grep -i kernel' - to reveal installed version
c. cat /etc/grub.conf -> /boot/grub/grub.conf - "" ""
2. Proper installation method is as follows:
a. 'rpm -ivh kernel*rpm' - install a separate version
Note: Install the following kernel packages if necessary:
a. kernel-devel* - if module compilation is necessary
b. kernel-headers* - if recompilation is necessary
Install:
a. rpm -ivh kernel-2.6.18-53.el5.i686.rpm
Note: This will update GRUB (/boot/grub/grub.conf)
Note: Will also place the new kernel in the /boot file system
Examine traces in:
a. /boot
b. /boot/grub/grub.conf
3. Remove traces of former kernel using 'rpm -e [--nodeps]'
a. kernel-2.6.18-8.el5 - removes older version
b. kernel-headers-2.6.18-8.el5 - force remove ignoring dependencies 'rpm -e --nodeps kernel-headers-2.6.18-8.el5'
c. kernel-devel-2.6.18-8.el5
4. Install new 'kernel-headers' and 'kernel-devel' packages using YUM:
a. yum -y install kernel-headers
b. yum -y install kernel-devel
5. Confirm that the 3 'kernel-*' packages are installed:
a. rpm -qa | grep kernel
Note: Removal of older kernel-* packages cleans up:
a. /boot
b. /boot/grub/grub.conf (menu.lst)
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