@heyro : I dont think that is a MBP Retina issue… because I have an aluminium MBP combined with 1TB WD passport usb 3.0 just like yours… and Im having same problem in here!
It’s symptomps are :
HD ejected unproperly after few minutes
afterwards my Finder wont work, spinning rainbow appears, cannot force quit the Finder
Cannot shut down my MBP, always stuck at a grey screen (hard shut down by holding the power button needed)
gonna try the solution above, finger crossed it will work…
it was a fool to trust all of my important data to a WD Passport… might need another ext HD as asecond backup!
