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I have one computer with Mojave and one computer with High Sierra. Further I have an extern disk with some Fotos libraries.
When I read a library on my Mojave computer it is automatically upgraded to Mojave.
Now I found out that is not possible anymore to read that library on my High Sierra computer.
Is there a solution?
Goos
[Personal Information Edited by Host]
iPhone 6s, macOS Mojave (10.14)
The only method to downgrade a Photos Library from Mojave to High Sierra is iCloud Photo Library.
If you are willing to pay for a month the fees for enough cloud storage to accommodate your complete Photos Library, you can get a Photos 4.0 library converted by downloading it from iCloud to your computer with Photos 3.0 on High Sierra.
Once you have the library again on the olde rMac, disable iCloud Photo Library on all Macs.
iCloud Photo Library makes it easy to share a Photos Library between Macs with different system versions. Two of My Macs are running Mojave, the third one is kept on High Sierra, but all are sharing the same Photos Library in iCloud. On my Mojave Macs the library version is Photos 4.0, on the High Sierra Mac it is Photos 3.0, on my iPhone X it is iOS 12 and the iPhone 5s iOS 11. I just love how easy it is to keep some devices on older versions, but still share the Photos Library on all devices and keep the libraries in sync, thanks to iCloud Photos.
The only method to downgrade a Photos Library from Mojave to High Sierra is iCloud Photo Library.
If you are willing to pay for a month the fees for enough cloud storage to accommodate your complete Photos Library, you can get a Photos 4.0 library converted by downloading it from iCloud to your computer with Photos 3.0 on High Sierra.
Once you have the library again on the olde rMac, disable iCloud Photo Library on all Macs.
iCloud Photo Library makes it easy to share a Photos Library between Macs with different system versions. Two of My Macs are running Mojave, the third one is kept on High Sierra, but all are sharing the same Photos Library in iCloud. On my Mojave Macs the library version is Photos 4.0, on the High Sierra Mac it is Photos 3.0, on my iPhone X it is iOS 12 and the iPhone 5s iOS 11. I just love how easy it is to keep some devices on older versions, but still share the Photos Library on all devices and keep the libraries in sync, thanks to iCloud Photos.
There's no downgrade path, short of rolling in pre-upgrade backups and re-applying the changes that happened after the Mojave upgrade—and then not upgrading the newly-restored system to Mojave, of course—or short of exporting everything and re-importing on the earlier release and running libraries in parallel for the duration, or of wholesale migrating the photos to a different photo storage app or service.
Apple hasn't supported storing Photo libraries on network-attached storage for a while now.
Old Macs and old software versions invariably fall behind as app data formats change, and as well as when too-old-to-connect network security support blocks Safari or other network connections to sites requiring recent security.
This is really a good solution. I have a big iCloud, I didn't know that different system versions could read from iCloud.
I'll start trying immediately!
Thank you very much for your prompt reaction and solution!
Regards,
Goos Bakker
Yes, there is a solution, and you already know what it is. Upgrade all systems that need to access that Photos library to Mojave. Cross-version access has always been dicy. At best.
Yes, and I know that of course.
However, my MacBook Pro is a little bit to old to be upgraded!
It is a pity. But I think I have to live with that problem until my new MaBook. Or?
Regards, Goos Bakker
Thank you, Mr. Hoffman, for your prompt and extensive reply.
Until I have my new MacBook I will have to live with problem. It is not too tragic.
Goos Bakker
High Sierra cannot read Mojave Fotos pictures
