I have several ( 4 or 5, IIRC) MFM hard drives. All *did* work, but have not been used for 5-10 years. They range from 3.5" HH, 20 MB up to (I think) 5-1/4" HH, 50 MB. Note that these early 3.5" HH drives are quite uncommon, since the world quickly moved to 1/3 height drives. Think these are all Seagates. Also a couple of Adaptec 4000A (not 4070) bridge boards. PICKUP ONLY -- sorry, but I won't try to ship these old drives. I live in the central Indiana area, so let me know if interested. If no takers, these go to the recyclers this weekend.
-Larry
Edit: I've taken them out of storage, and there are 2-ST125's and 2-ST251's. Also, two PC-type "shoe box" cases with 35 watt (I think) power supplies. All this stuff worked, and was set up for the MIO or Black Box. Both 125's are formatted for the MIO with MyDos 4.50. The bridge boards have 4010 roms in them.