TheCompact Disc File System (CDFS) is afile system forread-only andwrite-onceCD-ROMs developed bySimson Garfinkel and J. Spencer Love at theMIT Media Lab between 1985 and 1986.[1] The file system provided for the creation, modification, renaming and deletion of files and directories on a write-once media. The file system was developed with a write-once CD-ROM simulator and was used to master one of the first CD-ROMs in 1986. CDFS was never sold, but itssource code was published on theInternet and the CD-ROMs were distributed to Media Lab sponsors. The file system is the basis of WOFS (Write-once File System),[2] sold by N/Hance systems in 1989.