Okay, so here's the skinny. I have two Dreamcast systems. One I'd been using for the longest time, and now that I have a CRT TV for the light gun games, a second one I'd kept boxed up for the longest time and taken out to be able to go ahead and use on it. Well, back then the wisdom was "buy a year-2K system" because a late model system couldn't read CD-R discs without some boot disc or a modchip. So... imagine my surprise when I find this other (year 2000 manufacture) Dreamcast system not wanting to boot up any of the CD-R games. This is troubling, considering a fair number of which I'd wanted to play were the light-gun games specifically, and some of those games that didn't get an official, pressed, retail release (Ikaruga comes to mind). Was there a cut-off date that I needed to be aware of? or something I should do? Would a cleaning or repair job help with this? I'm just trying to get some ideas so I could have both of them working as needed/intended.