Triple Booted 13-Inch late 2011 MacBook Pro OS X 10.11.2 Windows 10 Ubuntu 15.10

this is a Late 2011 13 MacBook running Windows 10 Ubuntu 15.10 OS X 10.11.2 I used rEFInd to switch between OSes and gdisk to setup a hybrid MBR which allows Windows 10 to boot via BIOS instead of EFI UEFI... PREREQS a working OS X 10.11.2 install rEFInd installed - gdisk installed - bootable Windows 10 installation media bootable Ubuntu 15.10 installation media I started by using Disk Utility to partition the Hard Drive into 3 parts. I chose to split it into 3 equal parts Make sure that you have them the size you want them to be because adjusting the size afterwards isnt easyor even possible. You might also want to format the 2 empty partitions to FAT after you have them the size you want them to be just to make the install process easier. Note If your Mac is able to install Windows 10 and boot it via EFIUEFI then you wont need a hybrid MBR. Then I used gdisk to create a Hybrid MBR - more info on Hybrid MBRs can be found Once I had the Hybrid MBR setup I installed Windows 10 via a bootable DVD I created from a Windows 10.iso. NOTE This is where you will know if you setup the hybrid MBR properly or not as Windows will not install via BIOS to a GPT disk.If your Mac is able to install Windows 10 and boot it via EFIUEFI then you wont need a hybrid MBR. Once I had Windows 10 installed I went on to install Ubuntu 15.04 via a bootable USB,

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