id Software talks DOOM 3 and Beyond@ 2004/07/23
GameSpy: When did you actually wrap up development?
Tim Willits: We code released about 45 minutes before Todd (Hollenshead) told the rest of the world.
GameSpy: How many CDs is the game shipping on?
Todd Hollenshead: Three.
GameSpy: Can you give us any idea how much hard drive space everyone will need?
Todd Hollenshead: About 2 GB. Also, tell people to defrag their hard drive before they install!