Installing from an ISO image is a common way to install an operating system or other software on a computer. An ISO image is a file that contains a complete copy of an optical disc, such as a CD, DVD, or Blu-ray disc. ISO images are often used to distribute software because they are easy to download and can be burned to a disc or used with a virtual disc drive.
There are many different ways to install from an ISO image, but the most common method is to use a bootable USB drive. A bootable USB drive is a USB drive that has been formatted to boot a computer from. To create a bootable USB drive, you will need a USB drive that is at least 4GB in size and a copy of the ISO image that you want to install.