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 http://haiku-os.org/documents/dev/building_haiku_on_ubuntu_linux_step_by_step
and this one http://haiku-os.org/community/forum/installing_haiku_to_a_partition_from_linux

But I though I’ve read that you can use a live beos cd like BeOSMax @ http://www.beosmaxfiles.org/ and run makebootable off of that. Haikuware.com has some instructions on this.