Why Does My Sd Card Need Formatting. If the sd card works with your device (e.g., can see pictures on the camera) but doesn't work with your computer, it's safe to assume the computer card reader has problems. To format in mac os x, you can read here.

To get more information, you can refer to sd card recovery.

Your raspberry pi's sd card should now be in the same state as when you made the original backup. It aids in formatting a 64gb sd card to fat32 and also formatting a 128gb sd card to fat32. Your device may require a factory reset To eject the sd card, we will need to utilize the command below.