pra verificar o NUMERO do pendrive, ex: sd1
sudo fdisk -l
x=NUMERO
sudo dd if=/dev/zero of=/dev/sd${X} bs=512 count=1 && sync
sudo cfdisk /dev/sd${X}
x=NUMERO
sudo umount /dev/sd${X}
# A opção -I força a formatação sem necessariamente selecionar uma partição sdb1 ou sdb2.
sudo mkfs.vfat -I -F32 /dev/sd${X}
sudo mkdir /media/ISO-WIN
sudo mkdir /media/PEN-DRIVE
sudo mount -o loop '/home/viniceosm/Downloads/Win10_1607_BrazilianPortuguese_x64.iso' /media/ISO-WIN/
sudo mount /dev/sd${X} /media/PEN-DRIVE/
sudo cp -v -r /media/ISO-WIN/* /media/PEN-DRIVE/ && sync
sudo umount /media/ISO-WIN
sudo umount /media/PEN-DRIVE
sudo rm -r /media/ISO-WIN/
sudo rm -r /media/PEN-DRIVE/
echo "acabou!"