Installing Windows 10 with Bootcamp on MBP

[Luis Ortega]

I want to run windows 10 in Bootcamp using a MBP and an external drive.
Is it possible to install windows 10 to a usb external drive using Bootcamp rather than having to partition the hard drive in the MBP? I am using el Capitan OSX.

 

[keysofanxiety]

I want to run windows 10 in Bootcamp using a MBP and an external drive.
Is it possible to install windows 10 to a usb external drive using Bootcamp rather than having to partition the hard drive in the MBP? I am using el Capitan OSX.

No, you can't install any version of Windows to an external HDD.

EDIT: Just to clarify, when installing any version of Windows, it won't let you install or run it from an external drive. It'll display an error if trying to install it to an external drive, and BSOD if you try to run it from one.

There are a few ways to work around this, but they're all massively complicated and you won't be able to do it on your rMBP.