I got curious

I have some Sonnet Tempo SATA cards and a SATA Blu-ray combo drive.

I tried them with my MDD G4 running 10.5 and it worked

I then tried them with my 8600 running 9.2.2 and it worked.

I then tried booting off an 8.6 CD with the same 8600 and it worked

Someone is sure to ask about Blu-ray disks. Both 9.2.2 and 10.5 see the disk but can’t read the format. If you had a Blu-ray disk in HFS extended then I don’t believe you’d have a problem