MD Data

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MD Data

MD Data Sony MMD-140A
Media type	Magneto-optical disc
Read mechanism	780 nm semiconductor laser diode
Write mechanism	Magnetic field modulation
Developed by	Sony
Usage	Data storage
Extended from	Floppy disk MiniDisc
Extended to	Hi-MD
Released	July 1993

Optical discs
General Optical disc Optical disc drive Optical disc authoring Authoring software Recording technologies Recording modes Packet writing Burst cutting area
Optical media types Compact disc (CD): CD-DA, CD-ROM, CD-R, CD-RW, 5.1 Music Disc, Super Audio CD (SACD), Photo CD, CD Video (CDV), Video CD (VCD), Super Video CD (SVCD), CD+G, CD-Text, CD-ROM XA, CD-i, MIL-CD, Mini CD DVD: DVD-R, DVD+R, DVD-R DL, DVD+R DL, DVD-R DS, DVD+R DS, DVD-RW, DVD+RW, DVD-RAM, DVD-D, DVD-A, DVD-Video, HVD, EcoDisc, MiniDVD Blu-ray Disc (BD): BD-R & BD-RE, Blu-ray 3D, Mini Blu-ray Disc, 4K Blu-ray (Ultra HD Blu-ray) M-DISC Universal Media Disc (UMD) Enhanced Versatile Disc (EVD) Forward Versatile Disc (FVD) Holographic Versatile Disc (HVD) China Blue High-definition Disc (CBHD) HD DVD: HD DVD-R, HD DVD-RW, HD DVD-RAM High-Definition Versatile Multilayer Disc (HD VMD) VCDHD GD-ROM Personal Video Disc (PVD) MiniDisc (MD): MD Data, MD Data2 Hi-MD LaserDisc (LD): LD-ROM, LV-ROM Video Single Disc (VSD) Magneto-optical discs Ultra Density Optical (UDO) 3D optical data storage Stacked Volumetric Optical Disk (SVOD) Fluorescent Multilayer Disc Hyper CD-ROM Nintendo optical disc (NOD) Archival Disc (AD) Professional Disc DataPlay
Standards SFF ATAPI/MMC Mount Rainier (packet writing) Mount Fuji (layer jump recording) Rainbow Books File systems ISO 9660 Joliet Romeo Rock Ridge / SUSP El Torito Apple ISO 9660 Extensions Universal Disk Format (UDF) ISO 13490
See also History of optical storage media High-definition optical disc format war
v t e

MD Data is a magneto-optical medium succeeding MiniDisc.^[1] Sony wanted it to replace floppy disks, but instead came the Zip drive, CD writers, and memory sticks and cards.