在redhat rel 内核版本2.6.18-53.el5xen安装 linux2.6.22

下载自己想要的内核，

以linux-2.6.22.tar.gz内核为例。(rel5 linux kernel is 2.6.18)

>tar -zxvf linux-2.6.22.tar.gz

>su

>password:

>mv linux-2.6.22 /usr/src

>cp /usr/src/linux-2.6.22

>cp /boot/.config  ./    //use the defaut kernel config that your current linux config

>make menuconfig

choose Load an Alternate Configuration File . use .config  (in the current dirctory)

press TAB key choose OK  to go to main menu ,then  TAB key to exit

>make bzImage

for 20 min , then compile ok!

>make modules  // compile modules that selected by default config  through .config file

for 20min ,then compile OK!

>make modules_install //install modules

>make install // install kernel

that is ok！

Look the change of /boot/gurb/grub.conf

>cat /boot/grub/grub.conf

# grub.conf generated by anaconda

#

# Note that you do not have to rerun grub after making changes to this file

# NOTICE:  You have a /boot partition.  This means that

#          all kernel and initrd paths are relative to /boot/, eg.

#          root (hd0,0)

#          kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00

#          initrd /initrd-version.img

#boot=/dev/sda

default=1

timeout=10

splashimage=(hd0,0)/grub/splash.xpm.gz

hiddenmenu

title Red Hat Enterprise Linux Server (2.6.22)

        root (hd0,0)

        kernel /vmlinuz-2.6.22 ro root=/dev/VolGroup00/LogVol00 rhgb quiet

        initrd /initrd-2.6.22.img

title Red Hat Enterprise Linux Server (2.6.18-53.el5xen)

        root (hd0,0)

        kernel /xen.gz-2.6.18-53.el5

        module /vmlinuz-2.6.18-53.el5xen ro root=/dev/VolGroup00/LogVol00 rhgb quiet

        module /initrd-2.6.18-53.el5xen.img

title Red Hat Enterprise Linux Server-base (2.6.18-53.el5)

        root (hd0,0)

        kernel /vmlinuz-2.6.18-53.el5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet

        initrd /initrd-2.6.18-53.el5.img

the first title is the new kernel !!

>reboot

enter the timeout interface ! please enter ESC key to choose selecting kernel UI

test!!!!!!

Also you can modify /boot/grub/grub/gurb.conf to set default kernel

default=1  //default kernel

timeout=10

default=1 // defalut : the second title is default val