Cycling two backup drives with 2 partitions
 

For the longest time, I used SuperDuper to clone my mac to an external FW drive. I had two identical external drives, so I cycled them every few weeks, keeping one hidden safely away. I remember that to accomplish this and to allow SuperDuper to recognize them as the same, I had to set the low-level ID of the drives to be the same. Everything worked fine.

Since that time, I changed my two external backup drives to have two different partitions each, one for my mac, and another to backup an external audio drive I was using for recording music. My only problem is, when I cycle my drives now, and switch to the other external backup drive, SuperDuper doesn't recognize them and I have to recreate their schedules.

When I reformatted the drives with two partitions, did I somehow change the low-level ID? Do I have to do this low-level reset again? If you could point me to the instructions that would be great, as I couldn't find them in the board search.

Yes. You'll have to drop me an email (to support) to get the instructions.