xen said: 1.2GB CD's?
Wow, first time I hear of it. |
Yeah, they were custom discs, based on standard CDs. From what I understand, they basically had the error recovery sectors and stuff used for more data, leaving them extra-suscetpible to scratches.
It was a pretty good idea to get more space than a normal CD, as in 1998 shoving a DVD drive in the Dreamcast wasn't really an option for Sega.
They also thought it would cut down on piracy. This worked well, until some people figured out how to use their DC as a drive to read the discs or hacked the firmware of certain CD drives to read them, IIRC.