Provide access to long file names under real-mode DOS. Supported file systems: FAT12/16/32, ISO9660, Joliet. Supported operations: dir, copy, mkdir, rmdir, ren, cd, del.
DJGPP library for per-sector access to large disk drives >8Gb. It works via int13 BIOS extensions and can be used in any OS, which allows access to this service.