A couple of weeks ago I changed my old HDD, which I found out is curropted, with a new Crucial MX300 525GB SSD. I installed everything just fine and I spent almost two weeks enjoying the high speed difference with no problems, until suddenly my laptop froze and I had to shut it down and turn it back on, but when I did I was suprised to see the infamous flashing foulder with the question mark. When I enter Recovery Mode and check disk utility I can't see my new SSD at all. It's just disappeared for no apparent reason. I own a Macbook Pro 13 Mid-2012.
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