Few questions about booting windows from an external drive

[Bacong]

I'm planning on getting a SSD to put in my Mac Mini within the next month or two, but there are a few questions I have about it. I'll still have the 160 GB HDD that's in the Mini currently, and I'll buy an enclosure for it. But what I want to do, as to save space on the SSD (since I'll be buying 80 GB probably) is boot Windows 7 off the 160 GB. Is this possible?

 

[Bacong]

bump

 

[richard.mac]

have a read thru this https://forums.macrumors.com/threads/191777/ i think no, but its complicated.