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How to Format SD Cards on Your MacBook

Oct 29, 2018 10:50:00 PM / by BaseQi

format SD


Every once in a while, it’s nice to do a little spring cleaning around the house so dust doesn’t accumulate and mites don’t infest—the same idea applies to your SD and MicroSD cards. It’s crucial that you format these devices so that you can get a fresh start and a clean slate for storage. 


In this blog, you will learn how to properly format SD cards using your Mac in six easy steps.

Step 1. You’ll need to connect the SD card to your computer by using an external card reader. If  you want to keep any of the files on your SD card, simply save them on your computer before starting with the next step. Remember that formatting an SD card deletes all the data on it.


  • If you’re using a MicroSD card, you need to insert it into the SD card adapter that came with card prior to connecting it to your computer.

  • Mac OS 10.6.5 or earlier does not support exFAT, which is the format of most 64GB SD cards. This means you won’t be able to format your exFAT card using your Mac unless you upgrade your OS to 10.6.6 or later. Another alternative is to use an SD card that’s already formatted to MS-DOS (FAT) or FAT32.


Step 2. Open Disk Utility. Click on the magnifying glass icon on the top-right corner of your computer screen. Type “disk utility” in the search box, then click on the “Disk Utility” app.

Step 3. Find your SD card on the list that appears on left side portion of the window.

Step 4. Click on the Erase tab on the upper part of the window.



You can also select Partition. This formats the card's total storage capacity into separate directories, with each partition appearing as a separate card on your Mac. It is not advisable to do this for cards that you are also planning to use on Windows or Android devices as they may not detect the other partitions.


Step 5. Click on the “Format” drop down menu. Select “MS-DOS (FAT)” if the card is 32GB or smaller. If it’s a 64GB card, select “ExFAT”.

Step 6. You’ll see a message asking “Are you sure you want to erase the partition [Your SD card name]?” Click on Erase and wait for the card to format.

Just like that, you’re all done. Your SD card has been formatted and you didn’t even have to break a sweat. You can now start moving the files you previously saved back to your SD card.


Choosing a Format

The primary reason for formatting an SD card specifically for Mac OS is to create a bootable startup disk—one that contains the same exact OS version as your Mac. This is useful for troubleshooting, restoring a Time Machine backup, or simply running programs that are only compatible with an older version of Mac OS.

Mac OS can format SD cards in the Windows-compatible FAT and exFAT formats. The good thing about FAT is that both Windows 95 and XP can read it, and Android devices tend to perform smoother with it. Meanwhile, the exFAT format is more efficient for SD cards and other external media containing large files.


Using a MicroSD card on your Mac with the Ninja Stealth Drive

Do you own a MicroSD card that is too small to fit into the slot on your Mac? Already done formatting your SD card, but still don’t have enough storage space? Don’t worry, BaseQi’s Ninja Stealth Drive has you covered.


The Ninja Stealth Drive is a MicroSD adapter that works on any SD card brand. With this device, you can instantly increase your MacBook’s storage by as much as 400GB.


At BaseQi, we always go the extra mile. This is why the Ninja Stealth Drive is made of high-grade aluminum for added durability. It is also designed to fit perfectly into any MacBook model. We have also designed the Ninja Stealth Drive to be tool-free, meaning that you don’t need any special tools to insert or take it out of your MacBook. All you need are your fingers.


With a finish identical to MacBooks, the Ninja Stealth Drive completely integrates into your device, just like how a ninja blends into his surroundings. Once you insert it into your MacBook, it becomes a seamless part of the device. You can be sure that you won’t see any ugly protrusions.


Here are the five different varieties of the Ninja Stealth Drive.


  • 13-inch MacBook Air (before mid 2012)

  • 13-inch and 15-inch MacBook Pro 13 (before mid 2012)

  • 13-inch MacBook Pro Retina (late 2012 and after)

  • 15-inch MacBook Pro Retina (mid 2012 to early 2013)

  • 15-inch MacBook Pro Retina (late 2013 and after)


No matter what MacBook Model you have, there will surely be a Ninja Stealth Drive just for you.


So, what are you waiting for? Get a Ninja Stealth Drive today. You can also visit our blog for more helpful MacBook tips.

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Written by BaseQi

Our company officially started in 2013. Since then, we have fans purchasing our products from all over the world. Our mission is to invent stylish accessories and gadgets for fans around the world.

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