Chosen Solution
Hello, I have a MBP Unibody 13 Mid-2012. It came originally with 500GB 5400rpm HD. I replaced it into an OCZ Trion 240GB SSD Drive. The problem is that the SSD does not boot properly (folder with question mark, or forbidden sign). I have read that it might be a problem with the cable. The SSD boots up OK from external device. The thing is that the cable works perfectly when I plug the original HDD. (Reason why I assume on Apple Store will tell me that is SSD fault and they won’t change me the cable). My question is: is this a cable issue (having to replace it) or is there any software or BIOS problem that makes non-original Apple pieces to work wrong? Thank you very much!
When you have insert SSD in you Mac, you have to insert external media containing OSX (Ex. USB stick) and start up your Mac while holding down the “ALT” key. Start from this support, and wait for it to appear on the screen the main screen, so as to choose the option: “Utility Disk”. Choose your SSD and click on “Initialize”; Assign a name to your SSD and make sure that under “Format” is selected: “Mac OS Extended (Journaled)”.
