Hello, I have gone through the searches o the forum, however, can't appear to find anything which simply answers what im looking for, one could say a quite easy question. Essentially, im looking to Purchase Windows 7 so i can use it on my 27" iMac. My iMac has a 250Gb SSD and connected i have two 3TB External Hardrives for my main use. I was hoping, that i could purchase a Separate, 500GB External USB 3.0 Hard Drive, to then install Windows 7 on via Bootcamp, and just plug it it when needed and access it when needed. However, after a quick read of this forum it appears that, that is not possible. I am now under the impression, that you can not install Windows 7 on an External Drive, and even if you can, it is not a simple task. Can anybody confirm this for me? Furthermore, if it is true that i can not install Windows 7 on an External, and thus in turn forced to Partion my SSD, will there be any longterm effects on that performance wise, i.e if i one day remove it, or in general any performance issues when not using Windows, but on Mac. If i do Partion it, i only plan on it being around 60GB, i require it for some Steam games which aren't available on Steam for Mac, nothing major or extravagant and in all honestly it will rarely be used.