I've installed to hard drive using 50% of HD. So Windows has 2 partitions.
Then I manually made 2 partitions for ubuntu:
#3 primary /boot ext4 #5 crypted section with volumegroup for root and swap
Then the installation asks me that where to install grub and I write:
And the installation says fatal error. Where do I go wrong? The reason is that I want to create whole drive encrypted HD with Windows 7 and Ubuntu 12.04.