Steven Graeber just upgraded to El Capitan and wants to move his photos from iPhoto to Photos for OS X, but:
Photos gave me an option of 5 different libraries to choose from. Why is there more than one? I have never used multiple libraries. And the dates on these are from times I wasn’t using iPhoto at all.
You’ve got a couple of approaches to solve this.
I’d try to figure out first what’s in those libraries, to make sure they aren’t holding pictures or video you want.
You can select among iPhoto libraries by holding down the Option key when launching.
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