Comment 8 for bug 139514

Informative comments, thank you. Along with adding RAID10 support, we should also show a warning that stops the user from the /boot mount to be on a raid10 partition, or the root mount being on the raid10 partition if there is no /boot mount selected. Currently, the installer will continue, and the user will get a critical failure at the boot loader install portion of the installer, that doesn't describe why grub failed.