I had a USB flash drive plugged into my MacBook (running Yosemite), but that drive is now missing. Somebody must've taken it (unplugged it) from my computer while I was at work or while carrying it in my backpack.
When I now opened my MacBook, it showed the message that the disk wasn't ejected properly.
Can I find out when it was unplugged? What sort of message am I looking for in the event log?