page_title: Atari DOS
section_title: BW-DOS
hierarchical_section_title: Atari DOS / Third-party DOS programs / BW-DOS
caption_attribution_description: BW-DOS is a disk operating system for 8-bit ATARI computers
context_page_description: Atari DOS is the disk operating system used with the Atari 8-bit family of computers. Operating system extensions loaded into memory were required in order for an Atari computer to manage files stored on a disk drive. These extensions to the operating system added the disk handler and other file management features.
  The most important extension is the disk handler. In Atari DOS 2.0, this was the File Management System, an implementation of a file system loaded from a floppy disk. This meant at least an additional 32 KB RAM was needed to run with DOS loaded.
context_section_description: A SpartaDOS compatible DOS, the last version 1.30 was released in December 1995. It has a much lower memory footprint compared to the original SpartaDOS and does not use the RAM under the ROM of XL/XE machines, allowing it to be used on the older Atari 400/800 models.
  BW-DOS is Freeware by Jiří Bernasek.
caption: Screenshot of BW-DOS by Jiří Bernasek
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