I have a late-2011 MBP that currently has two operating systems on it. Those two operating systems were Windows 7 and Lion, for a long time. However, I have to use Yosemite (or newer) for some applications for work. So I blew out my Windows partition and set up Yosemite on it.
Now, I want to install Windows again. However, 100% of the triple-boot tutorials I find assume that I want to install Linux as my third OS, so I can't just follow someone else's recipe. I recall Core Storage hassles when going back and forth between Yosemite and Win7.
What's the best approach for me? I can't use Boot Camp, because I already have the Yosemite partition. Should I blow out Yosemite, repartition to have one full-disk Lion partition, use Boot Camp to install Windows, and then... something else?