I had a pioneer bdr-202bk working on 2009 mac pro 10.5.6
I installed a Pioneer BDR-202BK Bluray Writer into a 2009 octo MacPro. The drive worked fine using Toast 9 and Mac OSX 10.5.6. The firmware was as I bought the drive 1.04 2007. The recent 10.5.7 update rendered the drive incompatible with the O/S. I removed the drive and updated the firmware using PC to firmware 1.08 July 2008.
On resinstallation of the drive, it now registers as a compatible CD-ROM, but was no longer listed in the system info as a CD/DVD Writer, along with the existing Superdrive. I have since removed it and am waiting for a properly supported blu-ray drive.
I am a motorsport photographer for Audi and various series, this is used for secondary backup, due to my picture library from each shoot being roughly 10gb - 40gb. I am now using my dreaded PC again to get use of a blu-ray drive. Is anyone aware of when we might see a properly supported superdrive with blu-ray compatibility?
I would warn anyone of the same, others have reported some of the external drives to work in 10.5.7, although you have no guarantee on any unsupported drive with future updates for the better or the worse!
The lacie external drive is the only one available from Apples store and it is overpriced as expected being the only drive Apple currently support.