I have a huge photos library and an ssd local hard drive which is small comparatively. I have a raid 5 external disk array that I want to move my photos library onto and get the images off my ssd. How can I do that?
Mac Pro (Late 2013), OS X El Capitan (10.11.2)
In the Finder, drag it to a volume formatted as Mac OS Extended, launch Photos with the Option key held down, click on Other Library, and choose it.
(137505)
Are you using iCloud Photo Library, with the option "Optimize Mac Storage" enabled?
Then it would be easier to move the Photo Library to your external drive, if you disable "Optimize Storage" and wait for the originals to download. And only then drag the Photos Library to the external drive, provided your internal drive has enough free storage to accommodate the library.
How to photos library on external hard drive?
