fdisk -l /dev/mmcblk0
Disk /dev/mmcblk0: 14.5 GiB, 15577645056 bytes, 30425088 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: 0xf4eb77f0

Device         Boot Start    End Sectors Size Id Type
/dev/mmcblk0p1       2048 131071  129024  63M  b W95 FAT32