If the SCSI bus locks up just by inserting a CD, without any driver being installed, then it is an issue of the CD drive. The firmware probably does not support self-written CDs. So try another drive.
BTW, did you fixate your CDs (lead-out) ? Without fixation the CDs might lock up any drive. In this case is not the drive's failt but yours, not following the specifications.
Bye,
Thomas
