Hello,
I have Windows 7 on SSD and I had Haiku on HDD.
I removed Haiku from HDD but bootloader is still available even when there’s no partition with Haiku.
Tried to install Ubuntu on the HDD but GRUB doesn’t work and only Haiku’s bootloader showed. I wanted choose “uninstall bootloader” from Haiku DVD but only “install” is available :C
(I decided to use Haiku within VM because my GTX660 getting hotter in “real desktop”)
I used instalation with own partitioning, set “booting software” (or something like that) on HDD
then again grub-install. I’m not even good in Linux because I wanna start my adventure with that OS ;D