I just received a brand new Samsung 840 Pro SSD (256GB) that I am attempting to install in my mid 2012 cMBP. I purchased a 2.5" SATA Hard Drive enclosure to help me with the install. My plan was to place the SSD into the hard drive enclosure, connect it to my MacBook via the provided USB 2.0 cable, and then clone my MacBook's current hard drive onto the Samsung SSD via Carbon Copy Cloner (Trial Version), and then take apart the computer and physically install the SSD. So far, I've attached the SSD to the SATA Hard Drive Enclosure, and plugged into my MacBook via the provided USB 2.0 cable. The computer recognized that I plugged something in, but only recognized it as a 256GB Mass Storage Device. I went into Carbon Copy Cloner, and when I select my MAC Hard Drive on the left side (From), I cannot choose the Samsung 840 Pro SSD on the right side as the "To", in order to clone my hard drive. Any thoughts as to what I'm doing wrong here? ---------- I forgot to mention that when I plug the SSD in via the HD enclosure, I get the following message on my computer: "The disk you inserted was not readable by this computer". I then have three buttons to hit, Initialize (which brings up the disk utility), Ignore, or Eject. I hit the initialize button, which take me over to the Disk Utility, and this is where I'm stuck. I have no idea what if anything I need to do (format?) to the SSD via the Apple Disk Utility, or what I need to do to get Carbon Copy Cloner to recognize the SSD drive so I can effectively clone my current hard drive over. All help here is greatly appreciated!!!