Greetingz!
I'm using CentOS 5.x.
First, check your /boot directory.
Here's mine;
Code:
[user@server ~]$ ls -la /boot
total 39337
drwxr-xr-x 4 root root 2048 Jul 24 01:32 .
drwxr-xr-x 26 root root 4096 Sep 16 03:33 ..
-rw-r--r-- 1 root root 66891 May 13 12:38 config-2.6.18-194.3.1.el5
-rw-r--r-- 1 root root 66891 Jul 1 18:31 config-2.6.18-194.8.1.el5
-rw-r--r-- 1 root root 66887 Apr 2 14:25 config-2.6.18-194.el5
drwxr-xr-x 2 root root 1024 Sep 8 18:17 grub
-rw------- 1 root root 3421815 Jun 29 13:10 initrd-2.6.18-194.3.1.el5.img
-rw-r--r-- 1 root root 4206472 Jun 29 18:01 initrd-2.6.18-194.3.1.el5kdump.img
-rw------- 1 root root 6758114 Jul 23 20:29 initrd-2.6.18-194.8.1.el5-custom.img
-rw------- 1 root root 3421761 Jul 22 06:14 initrd-2.6.18-194.8.1.el5.img
-rw-r--r-- 1 root root 4300049 Jul 24 01:32 initrd-2.6.18-194.8.1.el5kdump.img
-rw------- 1 root root 3414516 Jun 29 11:47 initrd-2.6.18-194.el5.img
-rw-r--r-- 1 root root 4203954 Jun 29 13:12 initrd-2.6.18-194.el5kdump.img
drwx------ 2 root root 12288 Jun 29 06:28 lost+found
-rw-r--r-- 1 root root 94600 Jan 8 2007 memtest86+-1.65
-rw-r--r-- 1 root root 80032 Mar 16 2009 message
-rwxr--r-- 1 root root 2901 Jul 23 20:28 ramfs.sh
-rw-r--r-- 1 root root 112667 May 13 12:39 symvers-2.6.18-194.3.1.el5.gz
-rw-r--r-- 1 root root 112713 Jul 1 18:32 symvers-2.6.18-194.8.1.el5.gz
-rw-r--r-- 1 root root 112656 Apr 2 14:25 symvers-2.6.18-194.el5.gz
-rw-r--r-- 1 root root 1242305 May 13 12:38 System.map-2.6.18-194.3.1.el5
-rw-r--r-- 1 root root 1243148 Jul 1 18:31 System.map-2.6.18-194.8.1.el5
-rw-r--r-- 1 root root 1242340 Apr 2 14:25 System.map-2.6.18-194.el5
-rw-r--r-- 1 root root 1954652 May 13 12:38 vmlinuz-2.6.18-194.3.1.el5
-rw-r--r-- 1 root root 162 May 13 12:38 .vmlinuz-2.6.18-194.3.1.el5.hmac
-rw-r--r-- 1 root root 1954620 Jul 1 18:31 vmlinuz-2.6.18-194.8.1.el5
-rw-r--r-- 1 root root 162 Jul 1 18:31 .vmlinuz-2.6.18-194.8.1.el5.hmac
-rw-r--r-- 1 root root 1953660 Apr 2 14:25 vmlinuz-2.6.18-194.el5
-rw-r--r-- 1 root root 158 Apr 2 14:25 .vmlinuz-2.6.18-194.el5.hmac
[sysop@hydra ~]$
Each one of the bolded sections should have a corresponding entry in the grub configuration file.
Here's my main entry;
Code:
[user@server ~]$ sudo grep -v "#" /boot/grub/grub.conf|grep .
default=0
timeout=9
splashimage=(hd4,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS-custom (2.6.18-194.8.1.el5) (hd4,0)
root (hd4,0)
kernel /vmlinuz-2.6.18-194.8.1.el5 ro root=/dev/vg0/lv1 rhgb quiet crashkernel=128@16M
initrd /initrd-2.6.18-194.8.1.el5.img
And my corresponding kernel packages;
Code:
[user@server ~]$ rpm -qa | grep kernel
kernel-2.6.18-194.8.1.el5
kernel-headers-2.6.18-194.8.1.el5
kernel-devel-2.6.18-194.el5
kernel-devel-2.6.18-194.8.1.el5
kernel-2.6.18-194.el5
kernel-devel-2.6.18-194.3.1.el5
kernel-2.6.18-194.3.1.el5
[user@server ~]$
I would recommend first doing a "
yum list|grep -i kernel", to see what packages are available;
Code:
[user@server ~]$ yum list|grep kernel
kernel.x86_64 2.6.18-194.el5 installed
kernel.x86_64 2.6.18-194.3.1.el5 installed
kernel.x86_64 2.6.18-194.8.1.el5 installed
kernel-devel.x86_64 2.6.18-194.el5 installed
kernel-devel.x86_64 2.6.18-194.3.1.el5 installed
kernel-devel.x86_64 2.6.18-194.8.1.el5 installed
kernel-headers.x86_64 2.6.18-194.8.1.el5 installed
fortune-kernelcookies.x86_64 1.0-37.2.el5.rf rpmforge
fortune-kernelnewbies.x86_64 1.0-37.2.el5.rf rpmforge
kernel.x86_64 2.6.18-194.11.4.el5 updates
kernel-debug.x86_64 2.6.18-194.11.4.el5 updates
kernel-debug-devel.x86_64 2.6.18-194.11.4.el5 updates
kernel-devel.x86_64 2.6.18-194.11.4.el5 updates
kernel-doc.noarch 2.6.18-194.11.4.el5 updates
kernel-headers.x86_64 2.6.18-194.11.4.el5 updates
kernel-xen.x86_64 2.6.18-194.11.4.el5 updates
kernel-xen-devel.x86_64 2.6.18-194.11.4.el5 updates
kerneloops.x86_64 0.11-1.el5.rf rpmforge
[user@server ~]$
Then installing the appropriate packages, which for you might be the following;
Code:
[user@server ~]$ rpm -qa | grep kernel|grep 194.8.1
kernel-2.6.18-194.8.1.el5
kernel-headers-2.6.18-194.8.1.el5
kernel-devel-2.6.18-194.8.1.el5
[user@server ~]$
P.S: I'm done editing. That should at least get you started!