On 10/21/19 6:38 AM, isdtor wrote: > Booting with CentOS6 /boot/efi/EFI/redhat/grub.efi, and the older style pxe config file as per ... results in a grub (legacy) prompt on the target machine. Have you tried using the file from the installation tree? http://centos.s.uw.edu/centos/6/os/x86_64/EFI/BOOT/ or with files extracted from one of the ISOs? http://centos.s.uw.edu/centos/6/os/x86_64/images/