I tried out the disks I was formatting with the SE with my SE/30 and the SE/30 can read them. The disks that the SE wouldn't mount can't be mounted by the SE/30 anymore either (they did just prior to me doing all this). I made a new System 6 startup disk with the SE/30, and the SE booted off of it successfully.

The disks that won't work in either machine now don't seem to be able to be reformatted either. They must have gotten really chewed up through all this.

I think I've got a combination that works now.

J White