HDD in DVD slot with caddy works, but seems VERY slow, logically i assume step 5 , is HIGH risk critical, and now I must try undo everything , cos I spent a lot of time in step 5 and probably kill my mac
I replaced Primary HDD with SSD and moved HDD to optical slot with caddy, and it seems works, but HDD in optical slot is incredibly slow now. Macbook 7.1. Sierra. SSD Savage 250Gb.