I would like to backup my pc to disc using my Blue Ray drive, but when I select it as the destination in Norton Ghost 14.0, it ejects the blank disc and asks for another disc.

The drive is an LG GGW-H20L.  If there is another way to accomplish this, I would like to hear it as well.  I am currently backing up to another internal hard drive and a network hard drive on another PC.  Is there some way to burn the existing backup files from the backup hard drive to a blue ray disc(s)?  The drive to backup has 157GB used, so I doubt that it would fit onto one 50GB blueray disc, so there would have to be a way to split the image files???

Any help would be appreciated.