Laser Disc upto 10GB
3OGB UDOptical Disc
Protein Coated Disc. First Largest Disc - ~50tb (However leaser cant focus good so maximum space taken from it is 240gb)
Mini Disc Maybe 5 - 10 GB
Magneto Optical Disc
Music Disc special Disc
Typical Cd 700MB
HVD - Dont know much about it
GDCD - Not no about it too
Fluoroscence Disc. Stores data in Bright and Dark Fringes High Capacity
3D Optical Disc Very High Space In It - A first 3D Disc
Floopy Disc . 1mb to 2mb
HVD 2
PD - Platinum Disc - Used in FM-Stereo - 400mb
Blue Ray - 40 - 80gb Disc