Druid6900
Veteran Member
A lot of old 8" drives, such as the SA800, used to have either a dip shunt or a set of staking pins on the drive logic board (usually near the connector) that designated what drive the unit was.
If you can find these, and change them one for the other, your operational drive would then become your first drive and vice versa.
If you can find these, and change them one for the other, your operational drive would then become your first drive and vice versa.