As reported by IGN, players with early access to the game's single-player campaign found that the total file size for Call of Duty at installation  which also includes the Modern Warfare II campaign, Warzone, and Call of Duty HQ  now comes in at 234.9GB on PlayStation 5.

Storage: 1.4 GB of uncompressed free hard disk space (plus 400 MB for Windows 98/ME swap file, 600 MB for Windows 2000 / XP swap file) Sound Card: 100% DirectX 9.0b compatible 16-bit sound card and latest drivers. Additional Notes: 100% Windows 98/ME/2000/XP compatible mouse, keyboard and latest drivers.