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: 
Most likely the space is taken by Time Machine. It keeps making local snapshots when the persistent TM storage is not available. The local snapshots can pile up to as much as 80% of disk space. After the next backup, or when the disk space runs low, the local snapshots are automatically removed by macOS. So this is not really a problem that needs a fix, the system will take care of it.

That said, I'd agree that the System Information app needs a fix on High Sierra. It seems to include the local snapshots into "System" category and therefore it appears as used space, while Finder counts the snapshots as "purgeable", including it into the "available" space. This inconsistency is confusing.

DaisyDisk currently includes the snapshots into the used space (as opposed to Finder). Previously the snapshots could be revealed (./MobileBackups folder) when scanning "As Administrator", but starting from High Sierra and APFS, the local snapshots are saved outside the scannable area, so DaisyDisk simply shows a bigger "hidden space" segment. An update of DaisyDisk is said to be coming that will display purgeable space more consistently with Finder: <https://daisydiskapp.com/manual/4/en/Topics/HiddenSpace.html?subtopic=StillHiddenSpace>
You need to reindex your Spotlight cache. To do this

1. Go to System Preferences → Spotlight → Privacy
2. Click on the plus symbol and add your macOS hard drive you're having the wrong status/info problem
3. After adding your particular hard drive, quit System Preferences then wait for a few seconds.
4. Again open System Preferences → Spotlight → Privacy and this time remove your previously added hard drive.

What this does is it reindexes and creates the .Spotlight-V100 files on your hard drive. There are also various sudo commands to perform this step but for now try this!