Originally Posted by elephantrange
GRUB is a great bootloader, but does not seem to recognize the primary partition at all, making multiboot difficult. Is there a way of getting GRUB to recognize the HPFS?
The first sentence makes no sense - presumably you mean filesystem.
Been way too long since I looked at OS/2, but how about chainloading it ?. You don't say which grub, but with the classic grub (i.e. not grub2) use "rootnoverify".