Click the lock icon and enter your administrator password to unlock the settings. Here you will find ' Read only' under Privilege. Insert the SD card into Mac and right-click on it > Get Info > Sharing & Permissions. When you see the line ' Diskpart attributes cleared successfully', close the window and try formatting the SD card again. List disk > select disk 1 > attributes disk clear readonly. Step 2 Type in the commands one by one and press Enter: Step 1 Press Windows + Run to open the Run box and type diskpart. The first and simplest way to fix the SD not formatting problem is to allow the computer to make changes to the SD card. Solution 1 Remove Write Protection on SD card Thus, remember to back up the data before formatting and recover the formatted SD card to get your files back. That means, your data is still there but the SD card looks empty. Fix Unable to Format SD Card on PC/MACīefore you take any action, you should know that formatting will delete the access to your data. When the card is infected, it will not allow users to format it to clean up the viruses.

It won't allow the computer to make any changes to it.Ĭomputers won't format a corrupted SD card. Usually, the SD card fails to format is caused by the following reasons: No matter you are a Windows user or a Mac user, solutions below can help you fix the SD card won't format problem. But some users said when they tried formatting on the computer, they received a message saying Windows was unable to complete the format. you will need to format it to save the memory card.

When your SD card is infected with viruses or corrupted, or something goes wrong with the file system, like the SD card turns RAW, the card not showing up on the computer, etc.

How to format sd card in mac