The MorphOS driver seems to (intentionally) limit itself to only scanning for a single unit. The Efika is so far back in the past that I have no idea if there's a good reason for this or not, but if a second unit works for you in Open Firmware, then possibly not. If you're willing to be a guinea pig, then I could prepare a modified MorphOS 3.17 boot image which also attempts to use a second unit on the internal IDE controller for you to test.
I think the reason was that simply no one just counted on the other device.
I will gladly test the image and everything else that will be needed.
I appreciate that, things like this are not common in today's world[ Edited by sailor 05.06.2022 - 09:36 ]
AmigaOS3: Amiga 1200
AmigaOS4: Micro A1-C, AmigaOne XE, Pegasos II, Sam440ep, Sam440ep-flex, AmigaOneX1000
MorphOS: Efika 5200b, Pegasos I, Pegasos II, Powerbook G4, Mac Mini, iMac G5, Powermac G5 Quad