J'ai galéré mais j'ai trouvé :
ubuntu@ubuntu:~$ sudo fdisk -l
Disk /dev/loop0: 1.5 GiB, 1564921856 bytes, 3056488 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
Disk /dev/sda: 14.5 GiB, 15510536192 bytes, 30294016 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: dos
Disk identifier: 0x05a0ffdf
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 30294015 30291968 14.5G c W95 FAT32 (LBA)
ubuntu@ubuntu:~$ sudo blkid
/dev/sda1: LABEL="UBUNTU 16_0" UUID="4246-4C22" TYPE="vfat" PARTUUID="05a0ffdf-01"
/dev/loop0: TYPE="squashfs"