This specification, created in 1995, describes a method of loading various multiboot kernels using a single compliant boot loader (such as GNU GRUB) on i386-based computers.

It is used by a variety of kernel images, such as the Hurd, Xen, or NetBSD kernels.

An example implementation of a Multiboot kernel is provided.

For an example implementation of a Multiboot loader, check GRUB Legacy (grub-legacy package), or GRUB 2 (grub-pc package, and others).