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How to Format an SD Card Using Your MAC

How to Format an SD Card Using Your MAC

Below is a simple step-by-step guide of how to format an SD card using your Windows based PC computer: 

Please Note: This guide is written for MAC users. If you are using a PC, please visit our PC guide for help. If you run into any issues, you can always email us at for help! 

  1. Connect the SD card to your computer by using an external card reader.  Save all the files from your SD card that you want to keep to your computer before moving to step 2.  Formatting the SD card deletes all the data off of the card.
    1. Note – If you’re using a Micro SD card, please insert the Micro SD card into the SD card adapter that came with card.  Connect the SD card adapter to your computer by using an external card reader.
    2. Also note – Mac OS 10.6.5 or earlier does not support exFAT format, which most 64 GB SD cards are formatted to.  This means that you won't be able to format or use exFAT card on your computer.  In this case, we'd recommend either upgrading your OS to 10.6.6 or later, or using an SD card that's already formatted to MS-DOS (FAT) or FAT32 to complete the below steps.
  2. Open Disk Utility.  To do this, click on the magnifying glass in the top-right corner of your computer screen.  Type “disk utility” in the search box that opens, then click on the “Disk Utility” Application that comes up.
  3. Find the SD card in the left side of the window.  It’ll be named something like NO NAME or UNTITLED.
  4. Click the ERASE tab in the middle of the window.
  5. Next, click on the Format dropdown menu.  Select MS-DOS (FAT) if the card is 32 GB or smaller.  If it’s a 64GB card, please select ExFAT.
  6. A message will appear asking, “Are you sure you want to erase the partition “[YOUR SD CARD NAME]?”  Click Erase. The computer will delete the contents of your SD card and format it. You’re all done.