My Umax c603e/240 clone with 4.2 gb. hd scsi id 0 and a 2.1 gb. hd scsi id 2 a 24x cdrom using fwb cd toolkit scsi id 4. I have an Iomega Zip 100 scsi. It wont let me boot from it, if i leave a disk in it regardless if it has a system on it or not it freezes my mac. However if i boot without a disk in it, it will boot fine. Ive change scsi ids to both 5 and six. I turned termination off and on, but to no avail. HELPP!