Transferring 1000s of photos from iPhoto to iCloud
I have an old MacBook (OS X 10.9.5 - won't download anything newer) with 11,000 photos and videos on iPhoto. I want to upload these to iCloud but iPhoto won't let me.
I have a 2019 MacBook Pro and tried to connect the 2 Macsbooks to copy or transfer the photos that way but no luck.
Any help and advice appreciated.
MacBook