FYI, here's my partition scheme on a default raspbian install. The large 4TB disk is my external storage on the device. I didn't change any defaults.

pi@raspberrypi:~ $ sudo parted -l
Model: Seagate BUP BK (scsi)
Disk /dev/sda: 4001GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:

Number  Start   End     Size    File system  Name              Flags
 1      1049kB  106MB   105MB   fat32                          msftdata
 2      106MB   17.3GB  17.2GB  ext4
 3      19.3GB  4001GB  3981GB  ext4         Linux filesystem


Model: SD SL32G (sd/mmc)
Disk /dev/mmcblk0: 30.9GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number  Start   End     Size    Type      File system  Flags
 1      4194kB  133MB   129MB   primary   fat16        lba
 2      133MB   30.9GB  30.8GB  extended
 5      134MB   168MB   33.6MB  logical   ext4
 6      168MB   237MB   69.2MB  logical   fat16        lba
 7      239MB   30.9GB  30.7GB  logical   ext4


pi@raspberrypi:~ $