Mount FAT32
If your MacOS does not mount FAT32 formatted drive, you can try the following steps.
Check the name of the drive using the following command:
diskutil list
In the output, look for the drive that corresponds to your FAT32 formatted drive. It will be listed as something like /dev/disk7s2 (the exact name may vary).
Create a mount point for the drive:
sudo mkdir /Volumes/[Mount Point Name]
Then, use the following command to mount the drive:
sudo mount -t msdos /dev/disk7s2 /Volumes/[Mount Point Name]