Different photo library sizes in finder vs storage manage

Hello!


I have a large difference in size of photos library between Finder (364Gb) and "About This Mac Storage Manage" (168Gb) according to the printscreen.


I have a suspicion that when I updated to Catalina the photos library almost doble in size.


Any help is appreciated


Thank you very much


BMSPS



MacBook Pro

Posted on Dec 14, 2019 1:54 AM

Reply
17 replies

Dec 23, 2019 1:49 AM in response to BMSPS

    1. If the Photos app  on your Mac is open, choose Photos > Quit Photos.
    2. Hold down the Option key and double-click the Photos icon in the Applications folder (or click the Photos icon in the Dock) to open Photos.
    3. In the Choose Library dialogue, click Create New.
    4. Type a library name and choose a location to store the library.
    5. Click OK.
  • Now make the new library your system photo library:

 see System Photo Library overview.

    1. In the Photos app  on your Mac, choose Photos > Preferences, then click General.
    2. To make the current library the System Photo Library, click Use as System Photo Library.
  • This will disable iCloud Photos for your previous library. Now go to Photos > Preferences > iCloud and enable iCloud Photos for the new library. Wait for the photos to download back from iCloud. You may need to enable "Optimize Storage" as well, if you do not delete the old library right away.

Dec 14, 2019 11:30 AM in response to Lurkums

Lurkums, thanks in advance for trying to help.


I used the terminal command " Terminal is diskutil list" and the results are similar to yours with different volume sizes


The disk utility also shows a result like yours


I did not rebuild the Spotlight because I don't have any kind of problems with spotlight, also didn't quite understand how it would help in my situation


Regarding your last statement "You need to decide if this is 'real' used space or 'fake' used space before taking action" is where I need help:

1 - Need to verify if there is duplicate or fake space

2 - in case it is fake, how to delete it?


One more thing that I remember:

I have all my documents (photos included) in dropbox

After updating to OSx Catalina dropbox begun synchronising all the folders (photos library included) and I ran out of space

That's why I suspect of something.

The problem is I don't wanna mess with the library. I do not want do lose photos


Thank you



Dec 14, 2019 2:44 PM in response to Lurkums

My computer and dropbox organised the following way:

  • there is a dropbox folder inside my user folder that keeps all my document files (photo library included)
  • All the files that are on the dropbox server are also on my mac. When I add a file to the dropbox folder it is synchronised to the dropbox server and vice-versa
  • So, in my mac there are OS, software and also documents
  • In the future I will keep the photos library out of the dropbox folder because I have read that it may create problems
  • But meanwhile I would like to restore photos app original size


please let me know if there is anything more you need to know


Thanks for helping

Dec 18, 2019 3:55 AM in response to léonie

The size of the contents equals to the total size of the photos Library - 363,56 Gb


I found something strange, I have a MASTERS folder and a ORIGINAL folder whose size is very similar.

A also found that updating to CATALINA places all photos in the ORIGINAL folder instead of the MASTERS.

Could this be the solution to my problem?

When I updated to CATALINA the Photo Library was synchronising to dropbox so maybe the folder MASTERS was kept and also created the ORIGINALS doubling the space taken by the Library.


I know I should not delete any folder from the Photo Library folder, but is there any way to verify or repair this?



Dec 18, 2019 4:15 AM in response to BMSPS

It looks like Dropbox has damaged the library.


On Catalina you should no longer have a folder "Masters", only "Originals". Have you already tried to repair the library with the first aid tools, as described here? Repair your library in Photos on Mac - Apple Support

Make a backup copy of the library on an external volume, before you try this.


If Repairing does not fix it, you could try to rebuild the library by uploading it to iCloud Photos. Then download the library to a new, empty library. This will recreate a complete new library. But you will need paid cloud storage for at least a month.



Dec 14, 2019 4:37 AM in response to BMSPS

I suspect this is linked to your, mine and most other people's imperfect understanding yet of APFS and the structures it creates on disk. Google produces a list of many articles all purporting to understand the topic, very few of which are official Apple documents. I am assuming your drive that has your Photos library is APFS. APFS is not presented to the end user very well in terms of disk utilisation. That is an understatement.


There are three approaches after educating yourself in as many of these documents as you can cope with:


  1. Ignore it for ever
  2. Ignore it for a few hours and notice whether anything changes
  3. Study it in minute detail


If we choose option 3, a useful command to issue in Terminal is diskutil list


This ought to produce an output like:



This is a normal output and should reassure you [my machine has one internal SSD]


I expect your Disk Utility to show something like this:



To see the containers I have used the drop down in the top left hand corner


If all appears normal to you you can then decide to go further if you wish. Read How to rebuild the Spotlight index on your Mac - Apple Support and decide if there is any point. Every write to an SSD 'harms' it and decreases its life


You need to decide if this is 'real' used space or 'fake' used space before taking action

Dec 14, 2019 2:19 PM in response to BMSPS

If it is fake then APFS is intended to take care of it and we are intended to ignore it. I say intended because i have insufficient experience of it yet.


Reindexing with Spotlight will remove any fake space (0.9 probability)


I will need someone else to comment about dropbox and your use of it.That is outside my experience completely. WHatI Think you have said you are doing is holding 100% of all your files and photos in Dropbox? This means that, apart form the Operating System and Software you have no user files on your Mac?


Please reply with absolute clarity. I am wondering whether Photos may be importing onto your Mac's Dave items that you wish to keep in Dropbox. I also have no idea if a Photos library may be in Dropbox (If that is what you are attempting)

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Different photo library sizes in finder vs storage manage

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