OS X Blu-ray support to read / write BD-R discs for data storage
Reading the original post carefully, I can confirm that nothing special is needed to mount a blank Blu Ray Disk in the Finder, and then burn data to it with Mac OS X's built-in disk burning tool. I just did this yesterday with a 25GB BD-R. This worked perfectly with an external LG Bluray burner I just bought from OWC. Hope that helps.