Combo drive no longer recognizes CDRW disks
 

I have a Mac G4 running OS 10.4.11. The internal combo drive (Pioneer DVR-103) no longer recognizes CD-RW media, either blank or with music files on it. CD-R discs, including blank media, are recognized. Any suggestions? I use Toast Titanium 9 for most burning tasks. I also have a Blue &...