Format my WD 500 GB Hard Drive to both my Macbook Pro and Xbox 360

I just bought a new 500 GB WD external hard drive, and I formatted it in FAT32 so that I can put music and movies from my Macbook onto it so I can play them through my Xbox, but when I plug the hard drive into the Xbox, it doesn’t recognize it. Any suggestions? 

make sure the drive was properly formatted on FAT32

check this article