well, I clicked on HDToolbox (not CybSCSI Toolbox) and it appears the 2nd internal SCSI HD
You didn't include that in your previous list. What ID is the 2nd internal SCSI HD?
Again I suggest you simplify a bit. Start with one device (for example, your main hard drive). Remove everything else for the meantime and make sure your system is working 100% correctly. Then add a second device (for example, your second internal HD). Make sure your ID, termination, partitioning, and everything else are 100% correct and that the system works well and is stable with these two devices.
Next add the third device (this would probably be that internal CD-ROM you mentioned). Swap the termination jumper, triple-check that there's no ID conflict with the previous two devices, etc. Make sure all works well in this configuration and then go on to the next device.
You get where I'm going at with this, right?
If I understand your posts correctly you have a total of six devices (two internal hard drives, one internal CD-ROM, one external CD-RW, one external JAZ drive, and one external ZIP drive). That's quite a lot. It'll be a lot easier if you start at the beginning and work your way up. Or you can make it harder on yourself, your choice! Lol. :lol: