Ok, I have looked around and not seen a dupe of this question.  I have also looked online and really have not found a sufficient answer.I am finishing an associates degree, and am basically needing three separate OS's this semester.My main OS is Windows 10 Pro, which is installed and fine.  I am also needing Kali 2016.2 for a Firewalls/Intrusion Detection course, and Debian 8 for a Unix II course.Everything is all rainbows and unicorns until I get to setting up grub on the additional installations.  How do I do so without wrecking access to Windows?So far, I have set grub to the windows drive, not overriding the MBR, but when I do a boot override and try and boot the disks with linux on them, all I get is a black screen with a blinking prompt.Any help would be greatly appreciated.Also, Kali first or Jessie first?
Triple booting two linux distros and windows 10
debian;windows;kali linux;grub2;uefi