In the simplest terms, an ISO file (often called an ISO image) is a perfect, sector-by-sector digital copy of an optical disc—like a CD, DVD, or Blu-ray. Think of it as a digital clone or a complete "photograph" of the original disc.
In the simplest terms, an ISO file (often called an ISO image) is a perfect, sector-by-sector digital copy of an optical disc—like a CD, DVD, or Blu-ray. Think of it as a digital clone or a complete "photograph" of the original disc.