[CentOS] Help.I can't start with my new kernel.

Hello!Eveyone!
I'm a new user to CentOS.
I builded a new kernel(2.6.12) yesteray with these
command:
#make defconfig
#make menuconfig
#make
#make modules
#make modules_install
#make install
#reboot
...

But,when I choose the new kernel,it stop with "kernel
panic".
When building the kernel,I choose ext3 with "y".My
hard disk is IDE,so I choose the IDE support.

I don't know what's wrong.
I met the same problem on FC4.But,I can build a new
kernel on Debian successfully,using these commands.
Please help me. :-(


	

	
		
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