Formatting FAT32 on Mac

[robnagler]

Sierra (at least) seems to format FAT16 by default from the DiskUtil GUI. To format FAT32, you'll need to:

sudo diskutil eraseDisk FAT32 NONAME MBRFormat <SD CARD>

You find <SD CARD> by:

diskutil list

which in my case, shows:

/dev/disk2 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *8.2 GB     disk2
   1:                 DOS_FAT_32 NONAME                  8.2 GB     disk2s1

so replace <SD CARD> with /dev/disk2.

[techninja]

This is awesome and very useful, perhaps should go into documentation? @migpics May be able to assist or figure out where it should live (either in hardware documentation, or with this project)