Hmm, ok there might be a way. I think the CD32's CD drive is on cd.device unit 0. Assuming there is a standard IDE header on the board and you are able to access a slave device through cd.device unit 1, you might be able to create a bootable CD32 disc with a startup-sequence which mounts the hard drive on cd.device unit 1 (if it's not automatically mounted), then assign SYS:, C:, S: etc to the hard drive and then execute S:startup-sequence (which would execute the startup-sequence on the hard drive). You would obviously then have to have the CD in the drive to make it boot.
I have no idea if that would actually work. It's just an idea.
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moto