\EFI\BOOT\BOOTX64.EFI is always installed on an Ubuntu system be it MAAS or ISO.
Focal install via ISO from December 2019 # tree /boot/efi/ /boot/efi/ └── EFI ├── BOOT │ ├── BOOTX64.EFI │ ├── fbx64.efi │ └── mmx64.efi └── ubuntu ├── BOOTX64.CSV ├── grub.cfg ├── grubx64.efi ├── mmx64.efi └── shimx64.efi
3 directories, 8 files
Bionic install via MAAS today # tree /boot/efi/ /boot/efi/ └── EFI ├── BOOT │ ├── BOOTX64.EFI │ └── fbx64.efi └── ubuntu ├── BOOTX64.CSV ├── grub.cfg ├── grubx64.efi ├── mmx64.efi └── shimx64.efi
3 directories, 7 files
\EFI\BOOT\ BOOTX64. EFI is always installed on an Ubuntu system be it MAAS or ISO.
Focal install via ISO from December 2019
# tree /boot/efi/
/boot/efi/
└── EFI
├── BOOT
│ ├── BOOTX64.EFI
│ ├── fbx64.efi
│ └── mmx64.efi
└── ubuntu
├── BOOTX64.CSV
├── grub.cfg
├── grubx64.efi
├── mmx64.efi
└── shimx64.efi
3 directories, 8 files
Bionic install via MAAS today
# tree /boot/efi/
/boot/efi/
└── EFI
├── BOOT
│ ├── BOOTX64.EFI
│ └── fbx64.efi
└── ubuntu
├── BOOTX64.CSV
├── grub.cfg
├── grubx64.efi
├── mmx64.efi
└── shimx64.efi
3 directories, 7 files