The Sega Dreamcast uses a proprietary format that holds about 1GB of data, making it difficult to back up to standard 700MB CD-Rs. To solve this, the community created CDI (DiscJuggler) files—compressed or modified images that fit on a standard CD-R and are "self-booting" on most Dreamcast consoles. 📂 Locating CDI Archives
Sega Dreamcast CDI Archive refers to a preservation movement dedicated to cataloging and hosting games in the sega dreamcast cdi archive