MacOS – How to select/move multiple albums or events in the Photos sidebar

I would verify that your iPhoto library is fully intact. To do this:

1. Open Finder and open the /Applications folder.
2. Scroll down to iPhoto.
3. Pressing Option and Command, double-click iPhoto.

You'll be presented with a Rebuild Photo Library window. I would check the following options:

• Repair the iPhoto Library Database
• Rebuild the photos' small database
• Examine and repair iPhoto Library file permissions

Click Rebuild and wait until the process is complete. Once it's all done, go back to System Preferences and check to see if you can select iPhoto and albums okay.

If the issue persists, I'd take a look at this article on Mac OS X Hints and follow the steps listed there.

Good Luck!

I've found that turning on the sidebar has helped me adjust to Photos much more quickly.

Every import dumps photos into the All Photos album as well as the "Last Import" view. You have to create each album by choice and there are now no events that you can control directly.

You can choose the "summarize photos" option or uncheck it to get more or less detail when browsing by time, but Photos makes decisions based on the date metadata with each image.

Collections seem to replace events, but again - they are generated algorithmically and not something you can edit. Best case, change the metadata and export the original photos you wish to "edit or change" and then delete them. By re-importing the original images, you can perhaps influence the collection and ordering by algorithm, but the algorithms themselves remain the same.