Die Problem is probably related to Master/Slave. Usually thats done by Firmware of 2.5" drives as there are no jumpers.

If I recall right, we had the same issue on a geit@home meeting and the solution was to put the SSD to the CDROM port.

Probably polluks knows as it was his powerbook.

And just to be clear. There is not special init required when it fails, something is not compatible.

[ Edited by geit 10.10.2018 - 01:44 ]