$ sudo apt-get update
$ sudo apt-get install grub-linuxbios 

grub-linuxbios is installed in your system.

Make ensure the grub-linuxbios package were installed using the commands given below,

$ sudo dpkg-query -l | grep grub-linuxbios *

You will get with grub-linuxbios package name, version, architecture and description in a table

grub-linuxbios package basic information: