Hi I have an 11" Macbook Air with a 64GB SSD. I want to install Windows and Im looking at options to save SSD space. If I was to install Windows itself on an external device, HDD, or memory stick, is it recommended, horribly slow? Whats best option? Secondly, ignoring where Windows is installed, is there a big slow down installing applications on a external device? Understandably loading time for said application will slow down, but wile actually running will it have issues? Hope you can help, thanks.