Disk /dev/mmcblk0: 28.84 GiB, 30945574912 bytes, 60440576 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: 0xd6bdf418

Device         Boot  Start      End  Sectors  Size Id Type
/dev/mmcblk0p1 *      2048   526335   524288  256M  c W95 FAT32 (LBA)
/dev/mmcblk0p2      526336 60440542 59914207 28.6G 83 Linux


Disk /dev/sda: 28.66 GiB, 30752000000 bytes, 60062500 sectors
Disk model: Ultra USB 3.0
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: 0x73736572

Device     Boot      Start        End    Sectors   Size Id Type
/dev/sda1       1920221984 3736432267 1816210284   866G 72 unknown
/dev/sda2       1936028192 3889681299 1953653108 931.6G 6c unknown
/dev/sda3                0          0          0     0B  0 Empty
/dev/sda4         27722122   27722568        447 223.5K  0 Empty

Partition table entries are not in disk order.
amuro@pi2:/$