Ubuntu PXE Netboot
From wiki.breedveld.net
Ubuntu-PXE-netboot in CentOS
Download ubuntu alternate text based install
mount -o loop ubuntu.iso /mnt/iso cp -f -r /mnt/iso/* /tftpboot/ubuntu-install/
edit /tftpboot/pxelinux.cfg/default
LABEL ubuntu-install MENU LABEL Ubuntu Install kernel ubuntu-install/install/netboot/ubuntu-installer/i386/linux append initrd=ubuntu-install/install/netboot/ubuntu-installer/i386/initrd.gz