If the destination library is newer than your version of iPhoto, you won't be able to perform the copy, and you might want to consider working on the Mac with the newer version to perform your copying. If the destination library is older than your version of iPhoto, then iPhoto will prompt you and ask if you want to upgrade the library to the new version of iPhoto.
How to Move iPhoto Library to a New Location / Computer
If you tell it to upgrade the library, and your other Mac is still running an older version of iPhoto, then you will not be able to access the upgraded library from that other Mac without installing the newer version of iPhoto itself. So, don't upgrade the library unless you're sure you have the right version of iPhoto installed on all the Macs you want to access that library from. Website by Brent Cameron Design.
If you've created multiple iPhoto libraries , be sure to back up each iPhoto Library file. Backing up the Photos Library isn't much different than the method used for the iPhoto Library, but there are a couple of extra considerations.
How to import, merge, and consolidate your libraries in Photos for OS X
First, just as with the iPhoto or Aperture app, Photos supports multiple libraries. If you've created additional libraries, they need to be backed up, just like the default Photos Library. Additionally, Photos allows you to store images outside of the Photos Library; this is referred to as using reference files. In many cases, reference image files are stored on an external drive, a USB flash drive, or another device. Reference files are convenient, but they present a problem when you back up.
Since the reference images aren't stored within the Photos Library, they're not backed up when you copy the Photos Library. That means you need to remember where any reference files are located and make sure they're backed up as well.
How to safely move your Mac's iPhoto library onto an external drive
If you would rather not have to deal with reference image files and would prefer to move them into your Photos Library, you can do so:. Once you have all the reference files consolidated to your Photos Library, you can use the same manual backup process as outlined in steps 1 through 4, above, for backing up your iPhoto Library. Just remember, the library is named Photos Library and not iPhoto Library. Another method for backing up those precious photos is to use a third-party backup app that can handle archives. Now, the word "archive" has different meanings depending on how it is used.
In this case, we specifically mean the ability to maintain files on the destination drive that no longer appear on the source drive. This happens when you back up your Photos or iPhoto Library and then, before the next backup, delete a few images.
The next time the backup is run, you want to ensure that the images you deleted from the library aren't also removed from the existing backup. There are a number of backup apps that can handle this scenario, including Carbon Copy Cloner 4. Carbon Copy Cloner has an archive option that will protect files and folders that are exclusively located on the backup destination drive.
Add the archive feature to the ability to schedule backups, and you have a decent backup system that will protect all of your image libraries, including those used by Photos or iPhoto.
Share Pin Email. Updated October 06, See the problem? The originals are on your Mac and nowhere else. The Photos or iPhoto Library is located at: