#!ipxe isset ${mac:hexhyp} && goto boot_system || chain ipxe.pxe # load the MAC-specific file or fail if it's not found :boot_system chain pxelinux.cfg/${mac:hexhyp} || goto error_no_config :error_no_config echo PXE boot failed. No configuration found for MAC ${mac} echo Press any key to reboot... prompt --timeout 180 reboot