Install Windows 7 On External Hard Drive (Windows)

But the technical hurdles are immense. Microsoft never wanted this. Unlike Linux, which relishes external booting, Windows 7 was designed to tether itself to the motherboard of the host PC. To force it onto an external USB drive requires tools like WinToUSB or DISM commands , a process that feels like performing open-heart surgery with a butter knife. You have to inject USB 3.0 and NVMe drivers into the installer before the OS even knows what a flash drive is.