Regardless of how many Operating Systems one has in their PC, I would advise to only install an OS to the Active Partition. This will keep the boot files needed for this OS on the same partition as the OS. Therefor cloning the partition will include the files needed to boot the OS, once the restored partition is marked active.
After all Operating Systems have been installed,
EasyBCD can be used from Windows XP, Vista, or Win7 to modify the multi-boot menu at startup.