How to add kernel module to RHEL/Centos to fix unsupport driver

When you setup RHEL/Centos on Server, may be some driver is missing or not support.

One easy solution is rebuild ISO to add new module. This article may help you.

- Prerequires:

+ RHEL/Centos DVD (or ISO).

+ Kernel module.

- First: Build kernel module.

- Second: Mount DVD to disk and copy entire disk to new location.

mkdir ~/rebuild/ISO

mount /dev/cdrom ~/rebuild/ISO

rsync -a ~/rebuild/ISO ~/rebuild/BUILD

- Third: add module to initrd.img

Copy initrd.img to /tmp and move to this directory, then:

gzip -dc initrd.img > initrd.unc.img

cpio -id < initrd.unc.img

cd modules

zcat modules.cgz | cpio -idvm

Copy module to modules/2.6.18-128.el5/x86_64 ( in case i use 64bit) then repacked:

find 2.6.18-128.el5 | cpio -H newc -ov | gzip -9 -c - > modules.cgz

sync

Edit pci.ids, module-info and modules.dep (if necessary). Then create initrd.img:

cd ..

find . | cpio -H newc -ov | gzip -9 -c - > initrd.img

- Final: replace with your new initrd.img, and move to ~/build/BUILD to rebuild ISO

mkisofs -o ../custom.iso -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul- boot -boot- load-size 4 -boot-info-table -v -r -l -L -T -J -V "CUSTOM.X.X" .