Well, the Wallstreet’s T-board came in, and I performed the requisite surgery. I swapped the drives, as promised, and Bellerophon boots properly. However, the duped OSX boot drive is not behaving as it should, and the T-board does not appear to have solved the invisible battery problem – so more fiddlage to come next week, pursuant to rule #2:
No hardware projects allowed during weekends!
After I work everything through I’ll post surgery shots. Drive space is the original issue that led me to this pass,