Currently Being ModeratedMar 2, 2013 2:44 PM (in response to wirelyre)
Boot Camp Assistant will only create a partition on an OS X drive that only has one partition - Macintosh HD. If you have more than one partition on your hard drive, then Boot Camp will not create another partition.
If you want to create a bootable Windows partition on a drive that has more than one partition already, then you need to use a third-party boot loader such as Boot Runner or The rEFInd Boot Manager. I cannot tell you if these work with Parallels.
Currently Being ModeratedMar 2, 2013 4:36 PM (in response to wirelyre)
Parallels does not require a Boot Camp partition/instance to allow you to have a fully virtual Windows installation on you Mac. In fact, the Mac (MacBook Pro) I am using right now, has 2 instances of Windows 7 installed under Parallels but does not have Boot Camp at all. When I got his MacBook Pro about a year ago, I made the decision to stop booting my Mac into Native WIndows, and only use Windows as a virtual machine under MacOS.
You can ask your question on the Parallels forums about how to configure Parallels to such that you do not require a Boot Camp partition, you just won't be able to boot into native Windows with that instance.