The problem with going into disk management is that in Windows 7/8/2008R2/2012 (some versions of them, at least) you can’t format partitions as FAT32. The option simply isn’t there. And sure, diskpart will do it, but not everyone can cope with some scary looking command line options (where it’s surprisingly easy to choose the wrong drive). I did mention other formatting tools would work, but the one I suggested was free and simple.