How to dual boot Haiku with other OS using GRUB4DOS

[VoloDroid]

Check this thread:

Dual-booting Haiku with your other OS

One thing that I think many people would like is to have a simple and clear explanation of how to install Haiku in a computer with an existing OS so that the user has a choice of which one to boot. Very few non-computer people are used to dealing with Grub or other boot managers, and the explanations I have seen all assume a lot of prior knowledge.