Using LR4 on a Mac:
I have my catalog on my OS/Applications drive, and I store all of my photos on an external bare bones drive plugged into a docking station. I mirrored the content of the drive to a 2nd bare bones drive, and I have not imported photos into my catalog for at least 6 months. Somehow the labels on the two drives got mixed up and I imported photos to one of the drives six months ago that did not get backed up/mirrored to the other.
Can anyone recommend an easy way to determine which of the two drives have the most recent imports that the other does not?
Thanks in advance.
Your operating system can search for files by date