If you edit a photo from the migrated iPhoto library in an external app like Photoshop, any changes made will update the version in your iPhoto library while keeping the version in the Photos library untouched. migratedphotolibrary and makes a hard link to all iPhoto media assets in its own library package, using the same directory structure as iPhoto. So, when Photos migrates an iPhoto library, it changes the file extension on the iPhoto library package to. “If you delete your iPhoto library, the files that were hard-linked from the Photos library still exist in the Photos library and aren’t deleted,” he adds. Time Machine uses hard links to create incremental backups that save disk space. “If a file has two hard links, and you delete one, the file isn’t deleted - because it’s still linked to from another location,” writes Snell. Unlike soft links, or symbolic links, that are just references to the real version of files on your Mac, hard links permit the contents of a file to appear to exist in more than one location. This is possible because Photos for Mac uses hard links. Matter of fact, you can safely throw away your old iPhoto library and delete any image from it without affecting any of the images that have been imported to Photos. ![]() ![]() As for your Smart Albums based on star ratings, these get converted to search for the equivalent star keywords.Īs a nice bonus, the import process preserves your iPhoto metadata on photos, including things like descriptions, titles, flags and geotagging information.īut the iPhoto import in Photos goes even further.įor starters, it doesn’t create duplicates so you don’t lose precious storage space. ![]() Rather than duplicate the photos during the import process, Photos creates Unix-style hard links to files, allowing for quite a few interesting features detailed further below.įor those wondering, Photos will import your iPhoto Events as Albums and any custom iPhoto Albums and Smart Albums, with the latter retaining their smartness based on the rules you’ve created in iPhoto.įans of starring will be delighted to learn that Photos also turns iPhoto star ratings to keywords. New details continue to trickle out concerning Apple’s upcoming Photos for Mac software, as Jason Snell shared some previously unknown tidbits regarding how Photos handles iPhoto imports.
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