Hi all, I decided to take the plunge and install a second HD in my 2011 MacBook pro. I purchased a crucial M4 and a OWC data doubler. I installed it this morning with the ssd in the optical drive. When I initially booted from the ssd, the OS was so unresponsive and the beach ball spun so much that I assumed the drive needed to be wiped. I did that and attempted to install Lion from the image on my HDD desktop. It downloads the components and then restarts into the installation screen. When it gets midway through, it freezes and then starts again, continuing this for about an hour or so without progress. I eventually just shut it down. What is wrong with the drive? It works fine in the HD bay, but I'd prefer to use it in the data doubler. I have the EFI firmware update installed.