Directory contents single inode table | Full name Boot File System Partition identifier 0x63 (MBR) | |
The Boot File System (named BFS on Linux, but BFS also refers to the Be File System) was used on UnixWare to store files necessary to its boot process.
It does not support directories, and only allows contiguous allocation for files, to make it simpler to be used by the boot loader.
Implementations
Besides the UnixWare support, Martin Hinner wrote a bfs kernel module for Linux that supports it.
He documented the file system layout as part of the process.
The original BFS was written at AT&T Bell Laboratories for the UNIX System V, Version 4.0 porting base in 1986. It was written by Ron Schnell, who is also the author of Dunnet (game).
BFS was the first non-S5 (System V) Filesystem written using VFS (Virtual Filesystem) for AT&T UNIX.
References
Boot File System Wikipedia(Text) CC BY-SA