Raid 1Linux Installation fails to install grub

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http://unix.stackexchange.com – I have a Raid 1 setup (striping) via BIOS not through software raid. When I install linux mint or Ubuntu it fails to install the boot loader or set the boot loader to boot. I get an error stating grub-install /dev/sda failed. On start up of a fresh installI get the blinking cursor and no grub boot menu. I've tried a few different fixes with gpart and trying to use the advanced partition during install but I keep getting bootloader failed to load. I've also used the fdisk -l outputting only /dev/sda1 info which is the usb liveCD. Howevever, using fdisk /dev/mapper/nvidia_djcffehh -l will show (HowTos)