: An ISO file (short for ISO image) is an archive file that contains the contents of an optical disc (like a CD, DVD, or Blu-ray) in a single file. ISO files are commonly used to distribute the contents of a disc over the internet. When creating a bootable media, an ISO file is often used because it can be easily written to a USB drive or burned onto a physical disc, preserving the bootable properties.

You will need a blank CD/DVD or, more commonly today, a USB flash drive.