DCF file: Disk Copy Fast (DCF) is a file archiver software utility that creates disk images of floppy disks. It also refers to the file format used to encode the disk image files. These image files typically use the file extension ".DCF".
DCF files contain a file header plus a raw image of the floppy disk encoded as a bit stream of the first sector to the last sector. Sectors are imaged from track 00 sector 00 to the last sector. The DCF software by default only records sectors up to the last track used by the file system as specified in the file allocation table.
DCF format is not compatible with Rawrite (.ima) or .IMG file format.