How do i install True Crypt on Dual Boot Windows System on two separate Hard Drives

I have two physically separate Hard Drive with a dual boot system on my Dell Desktop.

Disk 0: Disk 0 has 5 Partitions.
71 MB (Healthy OEM Partition)
10.17 GB NTFS (Recovery)
C: 200.27 GB NTFS (Windows 7 Home Premium is installed here.)
F: 221 GB NTFS
G: 500 GB NTFS

Disk 1: Disk 1 has two partitions.
D: 131.51 GB NTFS (Windows 7 Ultimate Edition)
E: 800 GB NTFS

I tried to encrypt my Disk 1 using the True Crypt. However when i go and select the "Multiboot System" Option i get the error " Multiboot configurations are not supported when creating a hidden operating system". Then it does not proceed beyond that.

Can someone please show how to create a hidden operating system using two separate Disks running Windows 7 on both Disks ?

Thanks.