FreeBSD equivalent of DOS's fdisk /mbr

[Nobber]

Just wondering if FreeBSD has an equivalent to the 'fdisk /mbr' command in DOS (which installs a standard, simple bootloader in the MBR that chainloads from the active partition).

The boot0cfg man page suggests using:

# fdisk -B ad0

but all that seems to do is replace the current bootloader with the one that was present before you installed FreeBSD. And since the bootloader that was present before I installed FreeBSD was in fact the FreeBSD bootloader, this fdisk command effectively does nothing.

By the way, the reason I want to revert to the simple bootloader is that FreeBSD is the only OS on this computer, so I have no need for an interactive bootloader.