Missing SSD (HDD+SSD Combo)

[Siggen]

I cant find my SSD, I installed it, tested it worked.
I was to bussy to install an OS on the disc, at the time, so I wanted to do it later.
After some sleeps, the unsafe removal of drive message came up. Again still no time to do anything with it.

I have had TWO(2) firmware updates on my Mac since then, and both times, the drive worked for some sleeps after that...

Now I want to both ensure it will work and install Mountain Lion DP2 on it. And yes even Disk Utility wont find it, even booting from USB install media.

 

[mikeyray88]

similar issue and my fix

I had nearly the same issue as you are describing where I could not get the system to detect the drive properly.

I had to boot from the 10.6 DVD all the while my drive was plugged into my MacBook Pro as an external USB device. I ran Disk Utility and was then able to Repartition and format the drive. Reinstalled the drive back into my MacBook Pro and ran through the normal OS reload.