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How to format a high capacity SD card (128-256gb)? Mac OS

High- capacity SD cards will need to be formatted using FAT32 protocol. On your Mac, you will need to follow the steps below:

  • Connect the microSD card to the Mac
  • Open Disk Utility, found in Applications/Utilities/
  • Locate and select the SD card in Disk Utility from the left sidebar, then click “Erase” in the toolbar


  • Give the SD card a name, then choose the file system named MS-DOS (FAT), then click on the “Erase” button


  • Let the format process complete, then click the “Done” button when finished


  • Eject the Micro SD card when finished and insert on your M6


On the M6 camera, you can only boot and re-format a Micro SD card up to 64GB. You will need to use a PC or OSX computer to reformat high capacity SD cards.

SD cards can't be generic - It will need to be a Sandisk or Samsung Class 10

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