tftp PXE + tftp + dhcp + nfs DHCP Server config: /etc/dhcp/dhcpd.conf: allow booting; allow bootp; option space PXE; option PXE.mtftp-ip code 1 = ip-address; option PXE.mtftp-cport code 2 = unsigned integer 16; option PXE.mtftp-sport code 3 = unsigned integer 16; option PXE.mtftp-tmout code 4 = unsigned integer 8;