How to locate your usb drive
#On Ubuntu dmesg lsblk sudo fdisk -l
Format your usb drive to FAT32
sudo mkfs.vfat /dev/sdx -I
Make sure you get your USB drive path correct.
sudo dd if=/path/to.iso of=/dev/sdx
bs=4M && sync
I notice this method does not work for all ISO. Personally recommend E2B http://www.easy2boot.com/
Burn Windows server 2016 to USB
Mount the ISO (Wind server 2016)
Insert empty USB (data will be wiped out)
Run CMD as administator
diskpart list disk
Select your USB disk
select disk x
Clean to wipe your USB data
clean
Create partition primary
create partition primary list partition select partition x active
Format to NTFS and name the drive
format fs=ntfs quick label="2016Server" assign exit
Go to Mounted ISO drive (Source F: & Target T:)
F: cd boot bootsect /nt60 t:
Start copying (Source F: to Target T:)
xcopy F:\*.* T:\ /E /H /F
Create ultimate multi book USB