— The latest COD ≈ 300 GB — 300 GB = 300,000 MB (using the base 10 definition) — The number of MB in a 720 KB DS DD disk = .72 — The number of MB in a 1.44 MB DS HD disk = 1.44 — 300,000 / .72 ≈ 416,667 — 300,000 / 1.44 ≈ 208,333 So a rough estimate would be that the latest COD would require around 416,667 3.5" DS DD floppies, or around 208,333 3.5" DS HD floppies.