I've tried a couple of other accelerators, but they all disable everything else installed in the 68000 socket.
Which way round are you plugging them in?
There is almost zero chance it will work with the IDE plugged into the 68000 fallback socket of an accelerator. As it's disabled when the accelerator is in use.
The accelerator plugged into the 68000 of the IDE adapter on the other hand should be fine.
