SYA710 Building a New Kernel

download source from kernel.org
- wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.26.tar.bz2
unpack source
- tar xvjf linux-2.6.26.tar.bz2
create configuration (.config) file
- cd linux-2.6.26
- cp /proc/config.gz . (If this file does not exist, skip ahead to the alternate approach below.)
- gzip -d config.gz
- mv config .config

Alternate method of getting .config:

If the file /proc/config.gz does not exist on your system, you can get the required file by issuing the following commands:

make oldconfig
customize your configuration
- make menuconfig
compile kernel and modules
- make
copy kernel image to /boot
- cp arch/x86/boot/bzImage /boot/vmlinuz-2.6.26
copy system map to /boot
- cp System.map /boot/System.map-2.6.26
install the modules
- make modules_install
create initial ram disk image
- mkinitrd -k vmlinuz-2.6.26 -i initrd-2.6.26 (this did not work for me - mkinitrd considered it do be invalid syntax. Using 'mkinitrd initrd-2.6.26 2.6.26' worked, so try that if the first version gives you problems. - Gregory Masseau)
- For simplicity the syntax of mkinitrd file for here can be as ..

     mkinitrd name-of- image kernel-version .i.e mkinitrd initrd-2.6.26 2.6.26

- In generel if we have to create a initrd for the current running system the command i normally use

    mkinitrd -v /boot/initrd-$(uname -r).img $(uname-r)

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