- install syslinux
# apt-get install syslinux
- copy memdisk to tftp root
# cp /usr/lib/syslinux/memdisk /var/lib/tftpboot/11.04/
- Add following into pxelinux.cdf/default
LABEL dos
kernel memdisk
append iso initrd=dos/dos_622_supermicro_bios.iso