As mentioned, ISO files can be stored on DVDs, and by ripping these DVDs, you can always have the option to perform a clean installation of Windows 10. A recommended software for ripping is 'DVDFab ...

How to Create a Virtual DVD or CD on a USB Drive. Virtual CDs and DVDs, also called disc images, are single files containing data stored within a CD or DVD file system.

An ISO disc image is a special file that stores the contents of an entire CD or DVD on your computer hard drive. Keeping an ISO backup of expensive software such as Microsoft Office on your ...

Once you set it up on a USB stick, you can just copy the .iso file onto the stick and then add a reference to it into the menu text file. It looks something like this: Code: ...