Install makebootfat by entering the following commands in the terminal:
sudo apt update sudo apt install makebootfat
Description:
Utility to create a bootable FAT filesystem
Makebootfat is a command line utility able to create bootable USB disks using the FAT filesystem and syslinux. . Makebootfat is the most advanced tool available able to make bootable USB disks. It is able to autodetect/partition/format/populate the USB disk in a single step without any user interaction. It's also able to create disk images which are compatible with all the three standards USB-FDD, USB-HDD and USB-ZIP at the same time.
Homepage: http://advancemame.sourceforge.net/boot-readme.html
Version: 1.4-5.1
Section: universe/utils