I know there are many threads about this, but I couldn't find anything definitive, except that many people have problems trying to install windows from an external drive. I have a new MBP with a stock SSD in the main bay. I have an Optibay kit and an extra 160GB HD. I'd like to install the 160GB HD in the Optibay, and install Windows 7 on it. Since most people seem to have problems installing from an external DVD drive, here's my plan: 1) Remove the SSD and install the 160GB HD into the main bay. 2) Install OSX onto the 160GB HD. (I assume I need to install OSX on this drive so that I can run the Bootcamp Assistant and create the Windows partition. Is this correct?) 3) Run Bootcamp Assistant and install Windows 7 on the HD via the DVD drive that is still internal. 4) Remove the 160GB HD, put the SSD back in the main bay, remove the DVD drive, install the 160GB HD and the Optibay enclosure. Does this make sense? If so, I now have 2 different bootable OSX partitions, and 1 Windows partition. Will I be able to easily choose any boot drive on startup? I'd rather not have the 2nd OSX partition but I assume I need that to be able to install windows on the 2nd drive. Is there a way to remove or disable the OSX partition that's on the HD after all is done?