The Windows 11 setup on a new computer is a three-step process. First, you have to create a flash drive with the installation files.

You can create an ISO file from a CD, DVD, or BluRay disc using Windows but you’ll need to use a third-party app as this functionality isn’t built into the operating system.

Making an ISO image of a hard drive means creating a 1-to-1 backup copy that consists of a .iso file. Here are two ways to do just that.