[CentOS] Help rebuilding kernel get mount error on reboot

I am attempting to recompile the kernel with the following steps.

Install kernel-sourcecode rpm

cd /usr/src/linux-2.6.9-11.EL
cp /boot/config-2.6.9-11.EL .config
make menuconfig
       Device Drivers -> Character Devices -> Serial Drivers
        change Max number of non legacy 8250_NR_UARTS to 36
make bzImage
make modules_install
make install

Then after rebooting and selecting my -custom image from the above compile

"mount: error 19 mounting ext3"
"mount: error 2 mounting none"

Then the machine stops of source.

What happended? How do I get my custom kernel to boot.

Jerry