@Orange
I know this probably won't help much......
I tried a couple IBM drive and had NO LUCK.
One was a 50 pin 4.3 gig and the other was a
9 gig (I think).
I've learned to stay away from IBM drives.
I now have a 9 gig Quantum 68 pin with 68 to 50
pin adaptor on my A3k SCSI, no problems.
I've found Quantum drives to be the most Amiga
friendly.
I guess what I'm saying is, get away from the IBM
drives and the A2091 card should work.