The original 2000/2001 DVD release features slightly different color grading and original logos (like the classic blue Disney castle) that have been "plastered" over in newer digital and 4K versions.
An ISO allows you to play the "DVD experience" on your computer or media server (like Plex) without the risk of scratching the physical disc. A Brief History of Toy Story DVD Releases Toy Story Dvd Iso
A DVD ISO (or ISO image) is a single archive file that contains the exact data found on an optical disc. For Toy Story , this means an ISO file doesn't just store the movie; it preserves: Toy Story Dvd Iso