abra cmd, escreva Diskpart - popup vem então clique em "yes" agora você digita
write "list disk" if they show you a disk 1 - so it means it is your usb drive/ or you must check which one is the usb drive. (dont format the disk 0/ its your main OS system) "select disk 1" (to select your USB ) "clean" "create partition primary" "select partition 1" "active" "format fs=fat32 quick" "assign" "exit"
feito. deve trabalhar