How to consolidate multiple Photos and iPhoto libraries into one Photos library in OS Big Sur
Somehow I have managed to create multiple Photos and iPhoto libraries on 3 different disks (see attached screen shots).
I have read the Apple Support document on consolidating Photos libraries, but I have a mixture of iPhoto and Photo libraries of different sizes and I want to be sure all of their pictures are contained in my ultimate single library, which will be on an external drive and regularly backed up to another drive.
I do not want to put my photos in iCloud and I do not want any of them on my iMac's internal HD (Emlagh).
Thanks for any assistance
GerriG
iMac Line (2012 and Later)