82901A and the
HP 9121D now work great. Quite low capacity (270k?) due to
 the weird LIF formatting, formats 35 tracks but uses only 33, out of the
 40. I wonder why. 
 Partially because the original 5.25" drives (Shugart SA400)
were 35 track (#0
 - #34), not 40. 
 
I don't even remember, . . .
Does LIF also reserve some space for substitution for bad sectors?
(there were a higher percentage in those days)