I have several old iPhotos libraries on external drives. I would like to convert each of them safely to Photos. I do NOT want to migrate them into the current Photos library; these "old" libraries should exist independently of the Photos library. I use the third-party PowerPhotos app, if that helps answer my question
MacBook Pro 15″, macOS 10.14
You just need to launch Photos with the option key held down. From the dialog, choose an iPhoto Library. Photos will create a new Photos library for you - not merged with any other libraries - from your media. Your iPhoto Library will not be touched.
You just need to launch Photos with the option key held down. From the dialog, choose an iPhoto Library. Photos will create a new Photos library for you - not merged with any other libraries - from your media. Your iPhoto Library will not be touched.
Thanks, that worked well!
convert iPhotos to Photos
