You should see the rEFInd boot manager screen. Shut down your Mac - a full shut down, not a restart - and boot it back up again. Drag and drop the install.sh file from the downloaded zip file into the terminal window and press Enter to run it. Open a Terminal window by pressing Command + Space and, typing Terminal, and pressing Enter. First, visit the and click the Download button to download the latest refind-bin-version.zip file. REFInd is a currently maintained boot manager based on rEFIt.) causes problems with rEFIt, so you’ll need to disable full-disk encryption or before installing rEFInd.
(Some older how-to’s will instruct you to use rEFIt, but it’s no longer maintained. Installing rEFInd makes the dual-boot process easier. Install rEFInd RELATED: rEFInd is a boot manager that will allow you to choose between Mac OS X, Linux, Windows, and other operating systems when you boot your computer.