fdisk -lo Name,UUID guix-system-install-1.0.1.x86_64-linux.iso
Disk guix-system-install-1.0.1.x86_64-linux.iso: 1.3 GiB, 1379534848 bytes, 2694404 sectors
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: 30373931-3130-4130-B138-333934393436

Name               UUID
Gap0               30373931-3130-4130-B139-333934393436
EFI boot partition 30373931-3130-4130-B13A-333934393436
HFSPLUS            30373931-3130-4130-B13B-333934393436
Gap1               30373931-3130-4130-B13C-333934393436