iPhoto library conversion
I have three Macs, running from 11.7.10 Big Sur to 14.6.1 Sonoma. I have an old Mac Pro running snow Leopard with an iPhoto library containing 24,000 photos. I've tried installing the iPhoto updater on the Big Sur MacBook Air, but it says it's not compatible with the OS. I've tried exporting pics as jpg to an ssd( formatted macOS journaled) then importing them , but it's saying they can;t beoopened. Third party software is an option if anyone can tell me what. Haven't had any luck so far.
MacBook Air 15″, macOS 14.6