It's very confusing, and I think the 4/110 disagrees with my other systems.
t3,l0 is (0,18,0), and t1,l1 is (0,9,0).  On this machine.  This flatly
contradicts my other machine, but no one said they had to agree.  I have
gotten it to boot off of disks.  (Suggestion:  "binstall" should check  for
single-user mode, or at the very least, should print a reminder.  I *always*
forget.)

-s