ExFat it's great for USB flash drives and a easy way to get around this. But I had a few bad experiences with the lack of journaling working with a HDD. Maybe

ExFat it's great for USB flash drives and a easy way to get around this. But I had a few bad experiences with the lack of journaling working with a HDD. Maybe not a deal breaker for a lot, but for crucial data, my advice will be build a cheap NAS with Linux inside, and pass all data between OSs over network