Fedora 10 Installation from hard disk without cd/dvd or usb

I have running Fedora 6 and enough disk space to hold fedora 10 dvd iso.
Main idea is using initrd.img and vmlinuz under isolinux directory of dvd iso. Put them under /boot directory, edit grub.conf and boot from that kernel.

Downloaded Fedora-10-i386-DVD.iso to /mnt/disk2part1
Disk2part1 is /dev/hdc1 or /dev/sdc1.

# cd /mnt/disk2part1
# mkdir test
# mkdir images
# mount -o loop Fedora-10-i386-DVD.iso test
# cd test/isolinux
# cp initrd.img /boot/fedora10initrd.img
# cp vmlinuz /boot/fedora10vmlinuz
# cd ../images/
# cp install.img ../../images/

Now edit /boot/grub/grub.conf and add lines below

title Install Fedora 10
root (hd0,0)
kernel /fedora10vmlinuz
initrd /fedora10initrd.img

You should know where is your /boot directory. For me(hd0,0).
I select "install fedora 10" in boot screen and hard disk installation method.