Hi there! Is this the same question you asked seven years ago?
http://www.amiga.org/forums/showthread.php?t=53199Same issue, still? I'd start by focusing my efforts on getting one drive to work reliably. Then get a second drive to work reliably. Then go for the third. I assume the third is in some kind of external housing, and you're trying to get them to work in this order:
DF0: Internal
DF1: Internal
DF2: External
Have you swapped the jumper on the motherboard to enable two internal floppies? DS1/DS2 settings on the internal drives? Does the external floppy have any kind of settings adjustments, or is it just something generic like an A1010? The red stripe should go to pin 1 on the internal drives.
Some more info in this thread:
http://eab.abime.net/showthread.php?t=11781One last thought - there's a slight possibility that your power supply may be failing, and not able to support three drives. Try swapping PSU's (if you still have the three A2000's) or remove any add-on cards, just to eliminate insufficient power as a cause of your problems. Hope this helps!
