How to Format SD Card on Mac
Step 1. To do SD card format in mac open the spotlight search and look for disk utility.
Step 2. Click on the disk utility . A new disk utility window will open. The attached SD card is shown on the left hand side of the window.
Step 3. Click on the SD card on the left hand side and then click on erase icon on the centre of the disk utility window.
Step 4. A new window will pop-up. If required change the name of the SD card.
Step 5. Now change Format to Mac OS Extended ( Journaled)
Step 6. Click Erase after selecting the format.
.Mac will start erasing the data from the SD card
Step 7. After erasing is completed click Done
In this way you can format sd card on mac.