Comment 1 for bug 584324

There is also a very important use case which fails due to this error: having a full disk encryption installation of Windows with truecrypt and then installing full disk encrypted ubuntu. The grub has to be installed on /boot partition as truecrypt installer has to be in MBR as it is not that flexible as grub.

I was able to install grub to the sda3 when manually running grub-setup with --force on alternate CD, but the grub install is broken as the assets are not found and I have to manually type the kernel and initrd options on minimal grub shell.