Hi, I have a Windows PC Lightroom 5.7 catalog (all images are on 2 external disk, about 200,000 photos) and a new catalog on my MacBook Pro (all images on a different external disk only 4,000 images). I want to merge the PC catalog on to my MacBook. Has anyone done this? Can you share the step procedures with me?
You need to copy the catalog on your PC to an external hard drive > connect that external drive to MacBook and merge that catalog with the one on your MacBook.
To copy, you can directly copy the .lrcat file from your PC to external drive.
Then, refer this tutorial to merge both the catalogs : How To Combine Multiple Lightroom Catalogs Into One - YouTube
Thank you so much Chetna, I'll copy catalog and watch the video to merge.
Glad to help