File system: adfs

The file system Adfs was based on the rare Acord Winchester Filing System. It was renamed to the Advanced Disc Filing System when support for floppy discs was added. Acorn's original Disc Filing System was rather limited in that few files could be stored on a disk, and directory and file names were restricted to 1 and 7 characters respectively. To overcome some of these restrictions Acorn developed ADFS. The most dramatic change was the introduction of a hierarchical directory structure. The filename length increased from 7 to 10 letters and the number of files in a directory expanded to 47. This file system is used for floppy disks.