Hello, i made follow test. Create 64MB FAT32 Boot Partition. Copy <Version>/efi64/efi/syslinux.efi -> /EFI/BOOT/BOOTx64.efi Copy <Version>/efi64/com32/elflink/ldlinux/ldlinux.e64 /EFI/BOOT/ldlinux.e64 syslinux.6.04pre1 WARNING: No configuration file found syslinux.6.04pre2 system-diag syslinux.6.04pre3 system-diag system-diag: BIOS/UEFI System diagnostic are startet. Are pre2, pre3 Version broken ? Thanks Regards Johann