Hi, I am running into a little problem. I want to install Windows 10 on an external drive using an early 2011 Macbook Pro 15" (2.0ghz i7). When I use the bootcamp assistant application it lets me continue until I select the external USB which I formated and named Windows 10 in MS-DOS. After selecting the Windows 10 drive and clicking on continue a message stating that the USB drive cannot be used is presented. I dont know what else to do so any help is appreciated. I have searched and tried to modify info.plist so I can install from the .iso image I have on my downlaods folder but I cannot get to replace it even under my adminsitrator account and the drive is formatted.