Based on https://rust-osdev.github.io/uefi-rs/tutorial/hardware.html

1. Connect a USB drive (we will erase all of its data!).

2. Find its device path, e.g. via lsblk.

3. Create the GPT and correct partition layout for EFI, example using sgdisk:

   sgdisk \
       --clear \
       --new=1:1M:10M \
       --typecode=1:C12A7328-F81F-11D2-BA4B-00A0C93EC93B \
       /path/to/usb_drive

4. Format the partition as FAT:

   mkfs.fat /path/to/usb_drive_partition

5. Mount the partition:

   mount --mkdir /path/to/usb_drive_partition /mnt/usb

6. Copy in efimux.efi as efi/boot/bootx64.efi:

   mkdir -p /mnt/usb/efi/boot/
   cp efimux.efi /mnt/usb/efi/boot/bootx64.efi

7. Done! Now you are ready to boot from the USB.

No artificial intelligence was used in the making of this.