I am trying to compile kernel. The compilation process goes on well.
I use
make menuconfig
make modules_install
make install

Make modules_install creates a directory /lib/modules/ along with other directories inside /lib/modules/ where it keeps the kernel modules.
the problem is when I reboot my machine the /lib/modules/ gets deleted. Because of this I can run the kernel but I cant use the sound drivers.
Can anyone explain the reason behind this please.

My machine configuration is:
Os: Fedora Core 3
Hardware: AMD Semptron
Motherboard: VIA