Origins
The earliest flash file system, managing an array of flash as a freely writable disk, was TrueFFS by M-Systems of Israel, presented as a software product in PC-Card Expo, Santa Clara CA, July 1992 and patented in 1993.
One of the earliest flash file systems was Microsoft's FFS2, for use with MS-DOS, released in autumn 1992. FFS2 was preceded by an earlier product, called "FFS", which however fell short of being a flash file system, managing a flash array as WORM (Write Once Read Many) space rather than as a freely writable disk.
Around 1994, the PCMCIA, an industry group, approved the Flash Translation Layer (FTL) specification, based on the design of M-Systems' TrueFFS. The specification was authored and jointly proposed by M-Systems and SCM Microsystems, who also provided the first working implementations of FTL. Endorsed by Intel and other industry leaders, FTL became a popular flash file system design in non-PCMCIA media as well.
Read more about this topic: Flash File Systems
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