MD Data

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages) An editor has performed a search and found that sufficient sources exist to establish the subject's notability. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "MD Data" – news · newspapers · books · scholar · JSTOR (August 2023) (Learn how and when to remove this message) This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "MD Data" – news · newspapers · books · scholar · JSTOR (August 2021) (Learn how and when to remove this message) (Learn how and when to remove this message)

MD Data

MD Data Sony MMD-140A
Media type	Magneto-optical disc
Capacity	140 MB
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 Digital Versatile Disc (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 type of magneto-optical medium derived from MiniDisc.^[1]

In developing and marketing it, Sony was trying to set the new standard for removable media to replace the 3½-inch diskette it had also helped create. MD Data competed in a format war with other disks such as SyQuest's EZ 135, Imation's SuperDisk, and the Iomega Zip.^[2] Ultimately neither MD Data nor any of its competitors succeeded in becoming the de facto new universal standard fully replacing the 3.5 inch diskette; with recordable CDs coming closest to filling the role, followed by USB flash drives.