Photos Download Originals To This Mac

If you want to store your photos in iCloud, you must select the option to “Download Originals to this Mac”. This will ensure that all your photos are on the disk and the next task for you is to find them. Where Are the Photos Stored on Mac OS? Can't find photos on Mac? Where are pictures stored on Mac? I created a new library in the ssd, set it as system photos library and then enabled iCloud photos and Download originals to this Mac. But the photos apps simply gets stuck. EVERY SINGLE TIME. I tried: creating a new on in Mac's internal storage. Laving the app open during the night. Leaving closed during the night.

One of the more interesting features of Photos for Mac is its ability to not store my entire photo library on my Mac’s drive.1 It does this by syncing the entire library to iCloud Photo Library2 and then dynamically loading and unloading photos as you use it.

In true Apple fashion, Photos protects the user from thinking about managing storage — everything happens automatically, with absolutely no intervention from the user. That’s as it should be, but a few optional controls for the control freaks among us wouldn’t be the worst thing in the world.

This thought occurred to me when I was fishing a file out of my Pictures folder and noticed that my Photos library takes up 46GB of my precious iMac SSD storage space.

That’s a lot, especially when you’re supposed to render an HD video in Final Cut Pro, but you can’t because you’re out of disk space. There’s no button for me to press to put Photos in Austerity Mode, no interface to force it to slim down what it’s using. In fact, there’s no communication at all from the app about how it manages its own storage space.

Plumbing the depths of the Internet, I found this pretty great post on StackExchange that charts the size of the Photos library and a Mac’s disk usage. Photos is definitely optimizing the size of its library, though it’s still not entirely clear to me whether it only does this when it’s running, or if there’s some background process that might do it all the time. (My guess is that it’s the former.)

What that post does clarify is that Photos apparently has an optimization target: 10 percent of free disk space. So on my 467GB partition, it’s trying to free up roughly 47GB of free space. (At the moment that drive has 42GB free, so I guess it’s working?)

I’m also a little surprised at the 16GB of thumbnails in my Photos Library. That’s 240K in thumbnail data for every one of my 67,782 photos. It turns out that the Photos library actually generates two thumbnail files for each image: one “1024” image (roughly in the ballpark of 1024-by-768 pixels, though it varies based on aspect ratio) that’s 200K-300K, and a standard thumbnail that’s more like 480-by-360 and 50K-75K.

Those thumbnails are what make the Photos interface so pretty and responsive, even at Retina resolutions. At the same time… 135,000 thumbnail files on my SSD taking up 16GB of space. I guess that’s the trade-off of having a huge cloud photo library, but… wow.

I’m so happy that this feature exists, but in a future update I’d love to see a bit more transparency about how the storage is being optimized, and perhaps even a user option to blow out the cache or reduce the library size by some amount. Or, failing that, it needs to be much more aggressive in pruning its library in low-disk situations.

  1. After all, my photo library is larger than my Mac’s drive, so it just won’t fit! I had to break my old iPhoto Library into pieces and store it on a server. ↩
  2. You can’t use this feature if you aren’t using iCloud Photo Library, because Photos needs a data source for the files it’s deleting. ↩

Photos Download Originals To This Mac Pro

If you appreciate articles like this one, support us by becoming a Six Colors subscriber. Subscribers get access to an exclusive podcast, members-only stories, and a special community.


I have a 40,000 image icloud account, which i have recently populated from a disparate array of devices (2 x macs, 2 x iphone and ipad). Which appears to have worked well, albeit slowly.

On my Macbook Pro, I am using photos (version 1.0) and have selected 'download originals to this mac' to be my master copy, which I will subsequently back up.

Photos on this mac says there is nothing to download, but when I view some images/videos (that were synced from other devices) in photos on this mac it still appears to download the hi res version from the cloud. This is more noticeable with videos.

Is there a way to track progress of downloading of the full hi res content? Or maybe something else is at play?

Photos Download Originals To This Machine

MacBook Pro, OS X Yosemite (10.10.3)

Photos Download Originals To This Mac Os


Photos Download Originals To This Mac Screen

Posted on Aug 4, 2015 2:35 AM