Whee!

My 2-3X Panasonic DVD-RAM discs (4.7 GB, no cartridge,) work just fine in OS X Tiger. Disk Utility formats them no problem.

Disc is recognized in 8.6, but won't format, nor recognize one formatted in Tiger, even with OS 9 Drivers. (It prompts to format, but immediately fails.)

Disc is recognized in 9.1, as formatted in Tiger; and can format, read, and write without problems.

DVD Video discs play just fine in OS X, but not in 8.6-9.2.2. ('No decoder' error, and os9forever appears to be down at the moment, so I can't download the fix.)

My current hardware configuration is:

B&W G3, 500 MHz G4 upgrade

128 MB RAM (I scavenged the RAM from this system to put in another a while ago, and haven't gotten around to putting more in yet.)

ATI Radeon Mac Edition (the original, before they started giving numbers to the Radeon series.)

Apple-firmware DVD-RAM drive

Apple-stock ZIP drive

Original 13 GB Apple-firmware ATA hard drive, five partitions:

2 GB - Mac OS 8.6/10.0.4

2 GB - Mac OS 9.0.4/10.1.5

2 GB - Mac OS 9.1/10.2.8

2.5 GB - Mac OS 9.2.2/10.3.9

3.5 GB - Mac OS 10.4.11