To do this, head to the Startup Disk preference setting in Settings.Įvery time the Mac starts, you can also toggle between OS X and Windows by holding down the Option (Alt) key immediately upon startup. This procedure involves using the dd command line tool to write the installation image to a USB flash drive. Once you have Windows installed, you can set the default OS that will start each time you boot your Mac. Making Installation USB Media on Mac OS X. Set the Default Startup OS or Toggle Between OS X and Windows
The Mac will need to restart to complete the process and will automatically boot into Windows 10 when it's done. Follow the prompts to finish installing Windows.
