BTX (boot loader)

BTX (Boot Extender) is the standard FreeBSD and DragonflyBSD boot loader. It includes an Open Firmware-like Forth interpreter to manage the boot process. It's written by Robert Nordier.

BTX is a sort of standalone "mini kernel" which hosts the higher-level boot code, thus allowing boot loaders to be implemented as fairly normal C-style programs.^[1]

External links

• FreeBSD boot process
• BTX-related manpages:
  • btxld(8)
  • loader(8)

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