Have a Macbook Pro 8,2 with a samsung 500gb SSD. Out of nowhere, the machine freezes, and when I go to boot back up, I get the dreaded folder with a question mark. "Okay, can't see the boot OS, no problem. Let's check recovery to see what's up" Disk utility in recovery doesn't show any drive at all. Panic starts to set in. I take the drive and put it on a dock, and connect it via usb to another computer to see what's up. Drive pops right up. I got a little curious, and was actually able to boot via usb from the ssd on the affected macbook pro. Immediately thought it was the cable, so I ordered a replacement, and that didn't fix it either. Tl;dr, got the folder with the question mark, hard drive tested positive for functionality, cable didn't solve the problem. Anyone got any thoughts?