Chosen Solution
Well I have the same problem, I bought a Kingston HyperX SSD SATA 3. I replaced the Apple HDD (Toshiba) and the SSD isn’t recognized, even in disk utility. I also tried with a Hitachi HDD it also is not recognized, the only HDD recognized is the Apple Toshiba drive. I have a MBP mid 2012 Any idea? Thanks
Well, I changed the sata cable and it works now :)
See this similar problem. It could also be an EFI/driver problem. Have you checked the manufacturers support site/knowledge base? If this answer is acceptable please remember to return and mark it.
Chinese: 我觉得你的 Kingston HyperX ssd sata3 有问题，去更换一个试试吧 English: I think you have a problem, Kingston HyperX ssd sata3, try to replace with another.
