Clonezilla

UEFI - solving:

Failed to open \EFI\BOOT\mmx64.efi - Not Found

Experienced with Clonezilla-live-3.1.2-9-amd64.zip

Used solution from: https://askubuntu.com/questions/1085550/cant-install-ubuntu-18-10-on-xps-15-efi-boot-mmx64-efi-not-found

I setup GPT partition table with single FAT32 512MB EFI partition on 1GB SD card, here are details:

fdisk -l /dev/sdb

Disk /dev/sdb: 958 MiB, 1004535808 bytes, 1961984 sectors
Disk model: SD/MMC/MS PRO   
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 17510EC4-D99D-5842-89AC-0C141ECF28D4

Device     Start     End Sectors  Size Type
/dev/sdb1   2048 1050623 1048576  512M EFI System

Then I did

mkfs.fat -F 32 -n CZILLA-UEFI /dev/sdb1
mount /dev/sdb1 /mnt/test/
cd /mnt/test/
unzip /opt/iso/clonezilla-live-3.1.2-9-amd64.zip 
# Fix UEFI error:
cd /mnt/test/EFI/boot
cp grubx64.efi mmx64.efi
sync
cd /
umount /mnt/test