I have a 2016 MBP with Windows 10 installed via Bootcamp. When i start up it normally boots straight into macOS and if i want to go into windows i just hold down the option button when turning on. HOWEVER, i have turned it on this morning to find it boots straight into windows and holding the option key does nothing. I have tried using bootcamp manager but this just comes up with the message "Bootcamp could not locate macOS boot volume." I have looked on disk management on windows and the Bootcamp partition is still there, along with the macOS partition size - but not labelled macOS??? I have a bad feeling that it has erased my macOS partition if that is possible? Anyone have any ideas? Trying to contact Apple Support but been waiting forever!