Posted 13 April 2012 - 06:41 AM
I'm not sure how the disk utility works on OS 9. You can look to see what it did, though. Put the media in the drive and when it mounts, see what's on it. If you see the *.iso, it won't work no matter what you do.
If that's what you see, you might try installing linux instead. (I've installed linux on both G3 and G4 towers, but I've never tried on any other machine from Apple. And those were always burned on existing linux machines.) If you still want *BSD after that, at least linux will burn the media for you properly and you can reboot with that and do what you want. The problem is, I'm not sure how you would get linux to burn either. (Something might be arranged if you contacted my privately.)
If that isn't what you're seeing, I have no idea.
I had trouble getting *BSD (a couple of different kinds) to boot on x86 machines. No matter how I burned them they failed at boot. They also failed the MD5SUM check when I bothered to try that. I've had successful boots a couple of times (then had other failures during install). But those were rarer than the bad ones.