Burn a Windows ISO on Linux

First of all, don't do this. Windows is dumb and if you use it you are also dumb (by the transitive property of course).

Manually

Format & Mount USB

Create the partition:

parted -a optimal /dev/sdb

    mklabel GPT

    mkpart primary 1 100%
    name 1 windows
    set 1 boot on

Create the volume:

sudo mkfs.ntfs --quick /dev/sdb1

Disable write-caching on the USB drive:

sudo hdparm -W 0 /dev/sdb

Mount the USB:

sudo mkdir -p /mnt/usb
sudo mount /dev/sdb1 /mnt/usb

Mount the ISO

sudo mkdir -p /mnt/iso

sudo mount -o loop /home/ongo/iso/windows-9.iso /mnt/iso

Copy files to USB

sudo rsync -avh --no-perms --no-owner --no-group --progress /mnt/iso/ /mnt/usb/

sync /mnt/usb