Dual boot Windows 7/8 and Linux/UNIX (UNIX BSD descendants like FreeBSD, MAC OS X and Linux descendants like Ubuntu, Fedora) This guide assumes you have an installed and running Windows 7 or Windows 8 on a MBR style disk. Then you install a second non-Windows OS. If you install Windows 7/8 as second OS there is no problem. Windows 7/8 boot manager will be in control of the booting after installati