Are you looking to install Windows 10 on an external hard drive? Perhaps you want to create a portable Windows installation that you can use on any computer, or maybe you need to troubleshoot issues on a computer without affecting its internal hard drive. Whatever the reason, this guide will walk you through the process of installing Windows 10 on an external hard drive.
diskpart list disk select disk X (X = your external drive number) clean convert gpt create partition primary size=0 format fs=ntfs quick assign letter=W exit install windows 10 on external hard drive