i copied the kernel and initrd from installation DVD of open suse 10.2
to my boot folder
#cp openSUSE-10.2-GM-DVD-i386.iso/boot/i386/loader/linux /boot/
#cp openSUSE-10.2-GM-DVD-i386.iso/boot/i386/loader/initrd /boot/

and copied the ISO image of Suse DVD on a partition on hard disk that was completely free

now I booted from kernel image that was copied by the above commands
then I got the graphical installer screen asking me to start installation
by this method I have been able to install Suse in a friends comp without using CDROM or DVD ROM

what I want to know is if instead of the kernel image and initrd image that are on the installation DVD if I put up the kernel image and initrd that already are existing on a system
i.e.
vmlinuz-2.6.18.2-34-default
and initrd-2.6.18.2-34-default

the system does not begin installation

infact it boots into the new kernel on the system.

My question is what is the difference between the kernel images that are on the installation media inside openSUSE-10.2-GM-DVD-i386.iso/boot/i386/loader/
(name linux and initrd )

and the kernel images that are on the system after a fresh installation has taken place inside /boot/ folder
which was able to boot the system instead of starting installation