What command was missed when compiling and installing the kernel?

Your newly-compiled kernel cannot find any modules it needs to load. What command was missed
when compiling and installing the kernel?

Answer: make

Explanation:
modules_install

See
http://www.faqs.org/docs/Linux-mini/Modules.html#KERNEL
and
http://www.sysdesign.ca/guides/linux_kernel.html

mod_install: This will copy all the modules to a new directory, “/lib/modules/a.b.c” wherea.b.c is the
kernel version # make dep clean modules modules_install zImage