syslinux

txt.cfg

default install
label autoinstall
                menu label ^PortableCloud OS installer
                kernel /install/vmlinuz
                append file=/cdrom/preseed/ubuntu-server.seed initrd=/install/initrd.gz auto=true debian-installer/allow_unauthenticated_ssl=t$
label install
  menu label ^Install Ubuntu Server
  kernel /install/vmlinuz
  append  file=/cdrom/preseed/ubuntu-server.seed vga=788 initrd=/install/initrd.gz quiet ---
label hwe-install
  menu label ^Install Ubuntu Server with the HWE kernel
  kernel /install/hwe-vmlinuz
  append  file=/cdrom/preseed/hwe-ubuntu-server.seed vga=788 initrd=/install/hwe-initrd.gz quiet ---
label maas
  menu label ^Install MAAS Region Controller
  kernel /install/vmlinuz
  append   modules=maas-region-udeb vga=788 initrd=/install/initrd.gz quiet ---

label maasrack
  menu label ^Install MAAS Rack Controller
  kernel /install/vmlinuz
  append   modules=maas-rack-udeb vga=788 initrd=/install/initrd.gz quiet ---
label check
  menu label ^Check disc for defects
  kernel /install/vmlinuz
  append   MENU=/bin/cdrom-checker-menu vga=788 initrd=/install/initrd.gz quiet ---
label memtest
menu label Test ^memory
  kernel /install/mt86plus
label hd
  menu label ^Boot from first hard disk
  localboot 0x80