MKR SD Proto Shield not recognizing FAT32 partition

Has anyone been able to successfully get the MKR SD Proto shield to recognize the FAT32 volume? When I run the CardInfo sketch it says that the wiring is correct and that a card is present, however it is never able to recognize the FAT32 partition. I've tried formatting using both windows and the utility from sdcard.org. My chip select is set to 4 which I believe is correct. Any help would be greatly appreciated!

Which MKR board are you using ?
Will move you to a more relevant section.

The board I'm using is the MKR1000 Wi-fi shield