my mac mini only boots windows
So i just installed windows on my mac mini and now im on vacation with it and i only have my wireless keyboard with me and its not from apple so when i boot and hthen press and hold the alt key it just boots into windows i know osx is still installed on the mac because i booted into osx before i left. Please help i have tried everything that comes to my mind and searched the internet and YouTube is there a way i can boot into osx without the keyboard?
Mac mini, OS X Yosemite (10.10.4), mac mini late 2014