kamaraju kusumanchi wrote:
1) What is genkernel?
It's a Gentoo script for automated kernel generation from source during the original Gentoo installation. It's distantly comparable to the scripts in kernel-package, but doesn't require a manual "make oldconfig" to produce the same effect.
Since the OP seems only to want to upgrade a pre-compiled binary kernel, "apt-get install kernel-image-foo-bar" ought to work. It even updates grub/lilo.
-- PJR :-)