All of these worked: menuentry "memtest86 chainloaded from sda1 /EFI/BOOT/ UUID" --class memtest { search --set=root --no-floppy --fs-uuid 5a35be8c-8954-4df5-9da5-bf3f00861ca8 chainloader /EFI/BOOT/BOOTX64.EFI } menuentry "memtest86 chainloaded from sda1 /efi/boot/mt74x64.efi LABEL F6A8-27B2" --class memtest { search --set=root --no-floppy --label F6A8-27B2 chainloader /efi/boot/mt74x64.efi } menuentry "memtest86 chainloaded from sda1 /EFI/BOOT/ PARTUUID" --class memtest { search --set=root --no-floppy --fs-uuid F6A8-27B2 chainloader /EFI/BOOT/BOOTX64.EFI } menuentry "memtest86 chainloaded from sda1 /efi/boot/mt74x64.efi PARTUUID" --class memtest { search --set=root --no-floppy --fs-uuid F6A8-27B2 chainloader /efi/boot/mt74x64.efi } menuentry "memtest86 chainloaded from sda1 /efi/boot/mt74x64.efi LABEL GB3201ESP" --class memtest { search --set=root --no-floppy --label GB3201ESP chainloader /efi/boot/mt74x64.efi } menuentry "memtest86 7.4 EFI" { chainloader /efi/boot/mt74x64.efi } The first two menuentries produced long error messages, a pause, then memtest86 loaded and ran. The rest simply ran memtest86. /EFI/BOOT/BOOTX64.EFI and /efi/boot/mt74x64.efi came from the burned memtest86 7.4 .iso: /efi/boot/bootx64.efi I found the needed clues to success on a 3 year old post on: https://www.passmark.com/forum/memtest86/ Grub2 provides a wealth of ways to fail. :-p -- "Wisdom is supreme; therefore get wisdom. Whatever else you get, get wisdom." Proverbs 4:7 (New Living Translation) Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata *** http://fm.no-ip.com/ -- To unsubscribe, e-mail: opensuse-support+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-support+owner@opensuse.org