Old box, most probably using VIA Apollo KT-133/266 chipset...
These mobos are known to have all kind of problems handling DVDRW drives.
Can you please run Nero InfoTool.
Download, unzip to folder of choice, execute, click floppy at top (save), click Save again and post your configuration output in # [ CODE] tags with next post.
To start with you could rearange your drives and put optical drives on primary IDE channel. Make sure you use 80 conductor IDE cable. May or may not work.