The Advanced Disc Filing System (ADFS) is a computing file system particular to the Acorn computer range, although the Linux kernel does have support for this format. Acorn Computers Ltd. ... Tux, a penguin, is the official Linux mascot. ...

Acorn's original Disk Filing System (DFS) was a ROM for the BBC Micro. It has an extremely limited design in order to make best use of the 100k floppy discs it was originally designed for. It uses a flat directory structure with one letter to represent the current directory ($ by default). Changing directory meant using a different letter as the prefix. You could refer to a file in a different directory by prefixing it with the letter and a dot, eg "A.LETTER". Names could be up to 7 letters long, plus one letter for the directory. The file table was one disc sector, limiting the number of files on the disc to 31. The Disc Filing System (DFS) is a computer filing system developed by Acorn Computers Ltd. ... Rom is also the name of a toy and comic book character Rom (Spaceknight). ... Top view of the BBC Micro The BBC Micro, affectionately known as the Beeb, was an early home computer. ... A floppy disk is a data storage device that comprises a circular piece of thin, flexible (hence floppy) magnetic storage medium encased in a square or rectangular plastic wallet. ...

Other companies, including Watford Electronics sold their own replacement DFS. They typically added extensions, such as permitting two sectors to be used for the directory, increasing the maximum number of files to 62.

The most dramatic change in the Advanced Disc Filing System, initially introduced in the disc drive addon for the Acorn Electron and later incorporated directly into the BBC Master was the hierarchical structure. The filename length expanded from 7 to 10 letters and the number of files in a directory expanded to 77. It retained some superficial attributes from DFS; the directory separator continued to be a dot and $ now indicated the hierarchical root of the filesystem. ^ was used to refer to the parent directory and was the previously visited directory. It supported 3.5" floppy discs, formatted up to 640k capacity. The Acorn Electron Acorn Electron BASIC - the first thing displayed when an unexpanded Electron is switched on The Acorn Electron was a budget version of the BBC Micro educational/home computer made by Acorn Computers Ltd. ... A BBC Master 128 with monitor and disk drives. ...

Later, RISC OS would add a per-file "type" attribute; 12 bits of type information that was used to denote the contents or intended use of a file. This can be thought of as being similar to Apple's resource forks, only with much less information. Later editions of ADFS supported 800k double density floppies, and 1600k high density floppies. It was also used as the hard disc filesystem on the Acorn Archimedes and Risc PC models. RISC OS (Reduced Instruction Set Computing Operating System) is a British GUI operating system for ARM-processor based computers or similar devices. ... The resource fork is a construct of the Mac OS operating system (and implemented in all of the filesystems used on the Macintosh, MFS, HFS and HFS Plus), used to store structured data in a file, alongside and tightly bound to unstructured data within the data fork. ... The Acorn Archimedes was Acorn Computers Ltds first general purpose home computer based on their own ARM RISC CPU, and spawned a family of very capable machines with various options. ... The Risc PC (codenamed Medusa) was Acorn Computers Ltds next generation RISC OS/Acorn RISC Machine computer, launched in 1994, which superseded the Acorn Archimedes. ...