


I repeated this "preparing library" process twice, with similar result about 23% the other time. Photos has detected inconsistencies in your library.Īnd then only option is to Quit. After about 2.5 hours, at "24% complete", message of: The iPhoto library is about 415 Gb file size.Īfter opening Photos with command key, selected "iPhoto library" from external hard drive, and process began "Preparing Library", running at approx. From previous thread conversations, I have done the following to the iPhoto library (on old MacBook) before attempting to move/migrate/open in Photos on the new MacBook:ġ) option/command and opened iphoto, then ran EACH of the 6 rebuild options one at a time (thumbnails, permission repair, rebuild database, etc.)Ģ) then copied iPhoto library to external hard drive that is formatted Mac OS Extended (Journaled) and has "Ignore Ownership on this volume" checked, and 2.2TB of free space remaining. Attempting to migrate iPhoto '09 library from MacBook Pro running OS X 10.9.5 to Photos on new MacBook Pro running macOS Sierra 10.12.1.
