Hi there
I'm having a similar problem with my Mac system storage. I'm currently on Mojave OS and system storage is taking up 230GB...
I've looked at all the forum advice I can find and have tried to follow it, but I can't see any files that would be taking up that amount of space. I don't use Time Machine, and I don't seem to have any snapshots from TM stored on the system.
I use Mail a lot for work but I don't have 'Log Connection Activity' turned on.
Using 'Get Info' seems to give the same information regarding storage (Ie; 3GB left):
But when I run OmniDisk it seems to only be able to find 30GB of storage used...
DiskWave also doesn't show any large files that are out of place as far as I can see.
I'm hoping someone can help me out as I'm not sure if I'm missing something?
The only thing I can think that may be out the ordinary is that about a month back I plugged in an old SSD and deleted a whole load of movies and backups from a previous Mac off the drive through my Trash. Maybe I've done something stupid there - but I can't work out what it might be?
Appreciate any help anyone can give me, thanks.
Here's the Terminal readout if that helps too...
Last login: Wed Nov 6 11:37:27 on ttys000
DavidsMacBook2:~ DavidHubbleday$ sudo du -d 1 -x -c -g /
Password:
0 /.HFS+ Private Directory Data
1 /home
1 /usr
du: /.Spotlight-V100: Operation not permitted
1 /net
0 /.PKInstallSandboxManager
0 /.PKInstallSandboxManager-SystemSoftware
1 /bin
0 /Network
1 /sbin
du: /Library/Application Support/com.apple.TCC: Operation not permitted
3 /Library
0 /.Trashes
7 /System
1 /.fseventsd
du: /private/var/db/fpsd/dvp: Operation not permitted
du: /private/var/db/dslocal/nodes: Operation not permitted
du: /private/var/db/ConfigurationProfiles/Store: Operation not permitted
du: /private/var/folders/xs/gp1ytsy127gdp_8vm24_ylbr0000gn/0/SafariFamily: Operation not permitted
du: /private/var/folders/xs/gp1ytsy127gdp_8vm24_ylbr0000gn/0/com.apple.progressd/ClassKit: Operation not permitted
du: /private/var/folders/xs/gp1ytsy127gdp_8vm24_ylbr0000gn/0/com.apple.Safari/SafariFamily: Operation not permitted
du: /private/var/folders/xs/gp1ytsy127gdp_8vm24_ylbr0000gn/0/com.apple.LaunchServices.dv: Operation not permitted
du: /private/var/folders/xs/gp1ytsy127gdp_8vm24_ylbr0000gn/0/com.apple.nsurlsessiond: Operation not permitted
du: /private/var/folders/xs/gp1ytsy127gdp_8vm24_ylbr0000gn/0/com.apple.routined: Operation not permitted
du: /private/var/folders/xs/gp1ytsy127gdp_8vm24_ylbr0000gn/C/com.apple.WebKit.WebContent.Sandbox: Operation not permitted
du: /private/var/folders/xs/gp1ytsy127gdp_8vm24_ylbr0000gn/C/com.apple.QuickLook.thumbnailcache: Operation not permitted
du: /private/var/folders/xs/gp1ytsy127gdp_8vm24_ylbr0000gn/C/com.apple.WebKit.Networking.Sandbox: Operation not permitted
du: /private/var/folders/zz/zyxvpxvq6csfxvn_n00000sm00006d/0: Operation not permitted
du: /private/var/folders/zz/zyxvpxvq6csfxvn_n00000sm00006d/C: Operation not permitted
du: /private/var/folders/zz/zyxvpxvq6csfxvn_n00000y800007k/0/com.apple.nsurlsessiond: Operation not permitted
5 /private
1 /.DocumentRevisions-V100
0 /.vol
du: /Users/DavidHubbleday/Library/Application Support/MobileSync: Operation not permitted
du: /Users/DavidHubbleday/Library/Application Support/CallHistoryTransactions: Operation not permitted
du: /Users/DavidHubbleday/Library/Application Support/com.apple.TCC: Operation not permitted
du: /Users/DavidHubbleday/Library/Application Support/CallHistoryDB: Operation not permitted
du: /Users/DavidHubbleday/Library/IdentityServices: Operation not permitted
du: /Users/DavidHubbleday/Library/Messages: Operation not permitted
du: /Users/DavidHubbleday/Library/HomeKit: Operation not permitted
du: /Users/DavidHubbleday/Library/Mail: Operation not permitted
du: /Users/DavidHubbleday/Library/Safari: Operation not permitted
du: /Users/DavidHubbleday/Library/Suggestions: Operation not permitted
du: /Users/DavidHubbleday/Library/Containers/com.apple.VoiceMemos: Operation not permitted
du: /Users/DavidHubbleday/Library/Containers/com.apple.Home: Operation not permitted
du: /Users/DavidHubbleday/Library/Containers/com.apple.Safari: Operation not permitted
du: /Users/DavidHubbleday/Library/Containers/com.apple.iChat: Operation not permitted
du: /Users/DavidHubbleday/Library/Containers/com.apple.mail: Operation not permitted
du: /Users/DavidHubbleday/Library/Containers/com.apple.news: Operation not permitted
du: /Users/DavidHubbleday/Library/Containers/com.apple.stocks: Operation not permitted
du: /Users/DavidHubbleday/Library/PersonalizationPortrait: Operation not permitted
du: /Users/DavidHubbleday/Library/Metadata/CoreSpotlight: Operation not permitted
du: /Users/DavidHubbleday/Library/Metadata/com.apple.IntelligentSuggestions: Operation not permitted
du: /Users/DavidHubbleday/Library/Cookies: Operation not permitted
du: /Users/DavidHubbleday/Library/Caches/com.apple.safaridavclient: Operation not permitted
du: /Users/DavidHubbleday/Library/Caches/CloudKit/com.apple.Safari: Operation not permitted
du: /Users/DavidHubbleday/Library/Caches/com.apple.Safari: Operation not permitted
du: /Users/DavidHubbleday/Library/Caches/com.apple.Safari.SafeBrowsing: Operation not permitted
5 /Users
11 /Applications
1 /dev
1 /Volumes
0 /cores
30 /
30 total
DavidsMacBook2:~ DavidHubbleday$