Thanks so much for the help, Mark!

I'll try those things when I get home tonight.

I also realized that I could have skipped all of this complexity by merely doing the following:
- Attach the old drive by itself as master.
- On the old drive, copy the desired file into drive0/var
- Attach the new drive as master and the old drive as slave
- Copy the desired file from drive1/var

I'm assuming that proc/partitions is the file that controls which drives and partitions are mounted at startup, correct? If so, and if it's pointing at a nonexistent partition, what is the best direct way to repair the file? From my scrollback, my attempts to do it with "umount /t" failed.

Thanks again!