It's a very weird setting causing the controller to - duh - expose only n drives to the host. You can't choose which, it seems to just expose the first n drives. FreeBSD wouldn't boot with 36 drives exposed, but does with 4 or 16. MBR bootloader that is.

@FiLiS Wasn't @mwl complaining that FreeBSD wouldn't boot with 36 (virtual) drives attached?

@bodems but @mwl crashed the host running bhyve, not the guests bootloader _inside_, no?