How to Install Windows 10 Directly onto USB External Hard Drive

Windows 10 setup does not support configuration of or installation to disks through a USB or IEEE 1394 port, so the easiest way to install Windows 10 onto a USB External Hard Drive is through a program called WinToUSB. Steps: 1) Plug in your USB External Hard Drive and format NTFS 2) Download Windows 10 ISO Media Creation tool and WinToUSB 3) Use Windows setup to download 4) Install WinToUSB and deploy onto your USB External Hard Drive 5) Restart your computer and press F2 to get in