I got you covered. I bought a SANDISK 400 GB (four hundred GigaBytes) microSDXC and I got it to finally work in my Golf 7. So, what you need to do is use EaseUS Partition Master or something similar, format the drive as FAT32, but what you ABSOLUTELY NEED TO DO is to make that partition a PRIMARY one. By default, in EaseUS Partition Master when you create a partition, you are presented with all these options, size, allocation size, drive letter, type but it is only when you click ADVANCED you can choose wheater the new partition will be a LOGICAL one or PRIMARY. Logical partition is the default option. I chose PRIMARY and the microSD was visible. That is the key, the SD partition NEED to be set as a PRIMARY partition. When I created a logical FAT32 partition, the car was unable to read the SD.
