Question: [![enter image description here](https://i.stack.imgur.com/liZpX.png)](https://i.stack.imgur.com/liZpX.png)

![](https://i.stack.imgur.com/NHn5D.png)

I installed high Sierra a few months ago and nowadays there seems to be a problem with System Information.app, it always shows the disk usage wrong like for example System 40GB but it shows photos to be 0KB even though I have 19GB worth photos and DaisyDisk reports correct disk usage. 

I have tried booting into safe mode and rebooting, this persists after restarts 

Screenshot:
[![enter image description here](https://i.stack.imgur.com/BwsKp.png)](https://i.stack.imgur.com/BwsKp.png)
[![enter image description here](https://i.stack.imgur.com/MbKKj.png)](https://i.stack.imgur.com/MbKKj.png)

I have run this scan as root user not admin.

so how do fix this missing photo sizing in system information.app?

Answer: 
I have Carbon Copy Cloner installed (<https://bombich.com>) and it has a feature called CCC Snapshots. It occupied more than 200 GB of deleted data for a future backup in form of a snapshot (see <https://bombich.com/kb/ccc5/leveraging-snapshots-on-apfs-volumes>).

When I used `tmutil listlocalsnapshots /` there where two entries regarding Carbon Copy Cloner.

You can delete them using the CCC user interface: Select the hard drive in the lower left and then you get a list of snapshots that you can delete.

Big thanks to the guys from Daisy Disk that have a huge collection of possible reasons and mine was one of them: <https://daisydiskapp.com/manual/4/en/Topics/HiddenSpace.html?subtopic=StillHiddenSpace>
I solved this issue just relaunch finder.
Click on apple logo->Force Quit->Finder and click Relaunch. 
So I opened my finder and it shows the correct size.