We have both uEFI and Legacy systems on our network, is there a dhcp option NIC option ROMs should be adding that indicates it is a uEFI system that is booting? What would an ISC based dhcp.conf look like that can boot both types of systems? if some-insightfully-named-option = "uEFI" { filename "undionly.efi"; } else { filename "pxelinux.0"; } Duane