How do you back up large (200GB+) photo libraries?
I have only ever had one system library and it's at 290GB.
I moved it to an external hard drive to create space on my mac. I noticed the sync with iCloud stopped working. There are photos in my system library that are not in my iCloud. And photos in iCloud that are synced with my phone, but not with my system library.
Apple chat told me that if your library is on an external hard drive it can't use iCloud.
So my question is: How do you back up your photos if you have a large library? I want something easy, where I can edit photos from my camera on my computer, and then put them in Photos and they upload to iCloud. Is this not a possibility? Do I need to make multiple photo libraries?
Thanks in advance!
MacBook Pro 13″, macOS 10.15