Installing a downloaded image

Hello, this question must be very basic but I can’t find the answer anywhere. I downloaded a pre-built image and unpacked it to produce haiku.image of size 104857600 and type (according to GNU `file’) x86 boot sector. I copied this onto /dev/hda3 (GNU/Linux terminology: third primary sector) using dd then added the following to my existing grub.conf:

title Haiku
rootnoverify (hd0,2)
chainloader +1
but when I reboot and select this entry it says
Failed to load OS. Press any key to reboot…
Any ideas ? Did I do something basically wrong ?

I believe you have to run makebootable which is in the source code. You can download the entire source by following the instructions on this site. Check this link
and this one

But I though I’ve read that you can use a live beos cd like BeOSMax @ and run makebootable off of that. has some instructions on this.