Replaced DVD with a SSD 1TB and cannot write in disk and unmountable
I have replaced the DVD with a SSD 1TB drive and I cannot erase it, nor fix it, nor apply Disk Utility´s first aid. I formatted the disk vía USB box and it worked fine, I transferred the information onto it and when in the DVD bay, the disk can be read but not written. I switched with the main hard disk and it works fine. I replaced the disk in the bay with a 500GB mechanical disk and it works fine. With this later disk the negotiated link speed is 3 gigabits, while the links speed is 6 gigabits. When with the SSD, the negotiated link speed is also 6 gigabits. OWC website has a warning regarding installing SSD on this model instead of the DVD. How can I make this SSD works in this MacBook? Thank you,
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