Robert Heller wrote: > OK, it seems that the kernel I have (stock CentOS 4.7: 2.6.9-78.0.22.EL i686) > seems to gronk the nVideo SATA controller in AHCI mode. It is NOT able > to deal with the SATA DVD Burner I have. It is a "Sony Optiarc DVD > Burner with LightScribe Black SATA Model AD-7241S-0B LightScribe > Support". Is there some special magic I need to do? Here is the > relevant bit from the boot up (SATA ports 2-6 are empty at present): You could try booting with the boot command line option: pci=nomsi and see if that helps James Pearson