Before Windows 7, the system and boot partitions were, by default, the same and were given the identifier "C:".
operating system | Super Nintendo Entertainment System | Nintendo Entertainment System | Android (operating system) | Global Positioning System | Solar System | X Window System | Korean Broadcasting System | System of a Down | Partition of India | Domain Name System | Seoul Broadcasting System | North Carolina Community College System | Mutual Broadcasting System | Bulletin board system | system | Turner Broadcasting System | Program and System Information Protocol | Geographic information system | Ubuntu (operating system) | Tokyo Broadcasting System | Federal Reserve System | Das Boot | Youth system | Embedded system | solar system | Seigneurial system of New France | Interstate Highway System | Fedora (operating system) | Trans-Alaska Pipeline System |