LarryHN: The upgrade process is far from seemless when going from 7.1.5 (378) running either 10.5 or 10.6 to 9.5.1 (902.17) running mavericks. I've tried copying the iPhoto library from the old machine in numerous ways, but when I start 9.5.1 it fails to show any of the photos. This despite 3 months of effort by a clueful computer professional. I'll start a new thread, but I'm 100% sure I did nothing wrong and that any of the 6 different ways I copied the library should have just worked. They all failed. Do not blame me for doing something wrong: Apple is to blame here. Copying via the Apple Migration Utility should just work. Copying via dragging the old library on the old machine to an external disk should just work. Copying via rsync should work. Copying from a timemachine backup didn't work. None of these work. This library is 280GB, but even creating a new test library with 2 edited photos on the old machine and trying to get the new iPhoto to recognize it failed. Old Toad's method titled "Starting over from scratch with new library" will copy the photos, but I lose my edits unless I also drag over Modified folder, but that loses the assication between the original and modified photos.
So please, do not tell me that the upgrade is seemless. I call BS on that assertion based on first hand experience. I'll start a new thread on this, but blaming the victim is uncalled for. Apple's upgrade process is simply broken even for the most trivial cases when going from 7.1.5 to 9.5.1.