This has probably been addressed in various posts so I apologise in advance (but I can't find anything specific). I have an early 2011 MBP 13 inch with SATA II in the optical drive bay. I would rather put an SSD in the main bay but obviously the stock HDD doesn't have SMS, so the SSD would need to be in the optical bay. That said, I don't move it around other than in sleep mode. Is it a big risk? I've been looking at the Crucial M4 64gb as a boot drive. Will this work, or be problematic with respect sleep mode (and closing the lid), unreliability, not booting properly etc.?