Also, make sure the USB drive you are using is at least 8 GB and that it has no important data in it. SourceForge is a leading reliable repository of such ISO files. First of all, proceed and download a legally copy of Windows 10 in a ISO file.
How to Create a Bootable Windows 10 USB Flash Drive using RUFUS utility. If you don’t have the ISO file, you can download it from the developer website. An EMPTY USB Disk with at least 8GB storage space. Note: This tutorial assumes you already have the ISO file. (You can also use Rufus to format a USB drive in FAT32, which isn’t possible with the regular formatting tool in Windows 10.) The following steps show how you can use Rufus to quickly create a bootable flash drive in Windows. In fact, Rufus is one of the few necessary tools that every Windows user should have in their software catalog.
Of all the available tools, Rufus, a free and open-source application, is one of the best. With Windows, there are a ton of software programs to help you create bootable USB drives. Now our goal is to merge the 99 gb to 1 gb persistence to make it 100 gb persistence which we could not have done otherwise on rufus as it would be stuck on 100 formatting 7.So either arrange a vm or casually boot another iso in an Minimum of 4gb stick. It is very difficult to find a CD/DVD rom nowadays, so most people prefer to use a bootable USB drive instead of a CD/DVD drive to install an operating system or software edition.