topic Old kernel version is being used, even after upgrade. Please suggest. in Operating System - Linux

Old kernel version is being used, even after upgrade. Please suggest.

GnanaShekar — Thu, 22 Jun 2006 05:48:04 GMT

Hi,

We recently upgraded RHEL AS3 Update3 to Update6.
We have used yum to update.
I could confirm the upgrade by looking at the /etc/redhat-release file.

#more /etc/redhat-release
Red Hat Enterprise Linux AS release 3 (Taroon Update 6)

However the kernel version shown for the uname -a command looks to be still old.

# uname -a
Linux bangpcrh32 2.4.21-20.ELsmp #1 SMP Wed Aug 18 20:46:40 EDT 2004 i686 i686 i386 GNU/Linux

# rpm -qa | grep kernel
kernel-2.4.21-20.EL
kernel-doc-2.4.21-37.EL
kernel-pcmcia-cs-3.1.31-13
kernel-source-2.4.21-20.EL
kernel-2.4.21-37.EL
kernel-utils-2.4-8.37.12
kernel-smp-2.4.21-20.EL
kernel-source-2.4.21-37.EL
kernel-smp-2.4.21-37.EL

How do I change this. Please suggest.

Thanks & Regards

Re: Old kernel version is being used, even after upgrade. Please suggest.

GnanaShekar — Thu, 22 Jun 2006 06:38:48 GMT

Hi,

I changed the default label in /etc/lilo.conf and ran the lilo -v -v command.

After a reboot, I could see the latest kernel being used as the default.

# uname -a
Linux bangpcrh32 2.4.21-37.ELsmp #1 SMP Wed Sep 7 13:28:55 EDT 2005 i686 i686 i386 GNU/Linux

Thanks.

Re: Old kernel version is being used, even after upgrade. Please suggest.

Steven E. Protter — Thu, 22 Jun 2006 08:33:00 GMT

Shalom,

Make sure the new kernel really is properly installed.

Then edit /boot/grub/grub.conf and put it into production.

The file is self documented.

SEP

Re: Old kernel version is being used, even after upgrade. Please suggest.

Ivan Ferreira — Thu, 22 Jun 2006 10:05:35 GMT

From the rpm output it can be seen that the kernel kernel-2.4.21-37.EL was correctly installed, but when you install a new kernel, you won't boot this new kernel by default.

Edit /etc/grub.conf and change the line:

default=0

By

default=

To boot the N option of the grub file (The kernel that you want).