I am running Mojave Vs 10.14.6 and my system size is 166.3 GB on a 500 GB system. When I run Omnisweeper it shows the actual size to be 371.9 GB but no matter what I do I cannot get the Mac system to recognize the correct file size no matter where else I look.
MacBook Pro 15″, macOS 10.14
Have you emptied the trash lately?
Look for iOS backups…
/Users/[USERNAME]/Library/Application Support/MobileSync/Backup
OmniDiskSweeper shows you the files on your drive, largest to smallest, and lets you quickly Trash or open them.
https://www.omnigroup.com/more/
Purging local backups
Please note that although this doesn't affect your remote backup from Time Machine, this will get rid of the redundancy (at least until the next Time Machine backup) that a local backup disk will provide. If you need such redundancy or are worried about the recovery of your data then you would be best served to let macOS determine when to purge these files.
Start Terminal from spotlight.
At the terminal type tmutil listlocalsnapshotdates.
Hit enter.
Here, you'll now see a list of all of the locally stored Time Machine backup snapshots stored on your disk.
Next you can remove the snapshots based on their date. I prefer to delete them one at at time. Once my "System" disk usage is at an acceptable level, I stop deleting but you can delete all of them if you want to reclaim all of the disk space.
Back at the terminal, type tmutil deletelocalsnapshots YYYY-MM-DD-HHMMSS , where will be one of the dates from your backup. This will be in the form of xxx-yy-zz-abcdef. Try to start with the oldest snapshot.
Hit enter.
Repeat for as many snapshot dates as required
http://www.thagomizer.com/blog/2018/03/27/cleaning-up-time-machine-local-snapshots.html
tmutil deletelocalsnapshots / # deletes all the snapshots
Have you emptied the trash lately?
Look for iOS backups…
/Users/[USERNAME]/Library/Application Support/MobileSync/Backup
OmniDiskSweeper shows you the files on your drive, largest to smallest, and lets you quickly Trash or open them.
https://www.omnigroup.com/more/
Purging local backups
Please note that although this doesn't affect your remote backup from Time Machine, this will get rid of the redundancy (at least until the next Time Machine backup) that a local backup disk will provide. If you need such redundancy or are worried about the recovery of your data then you would be best served to let macOS determine when to purge these files.
Start Terminal from spotlight.
At the terminal type tmutil listlocalsnapshotdates.
Hit enter.
Here, you'll now see a list of all of the locally stored Time Machine backup snapshots stored on your disk.
Next you can remove the snapshots based on their date. I prefer to delete them one at at time. Once my "System" disk usage is at an acceptable level, I stop deleting but you can delete all of them if you want to reclaim all of the disk space.
Back at the terminal, type tmutil deletelocalsnapshots YYYY-MM-DD-HHMMSS , where will be one of the dates from your backup. This will be in the form of xxx-yy-zz-abcdef. Try to start with the oldest snapshot.
Hit enter.
Repeat for as many snapshot dates as required
http://www.thagomizer.com/blog/2018/03/27/cleaning-up-time-machine-local-snapshots.html
tmutil deletelocalsnapshots / # deletes all the snapshots
How big or how many log files?
Have you run Disk First Aid?
I actually emptied my entire Application Support file to try and solve the problem previously. I also removed all Cache files and deleted my trash, email downloads, and downloads folders.
I have never made any Time Machine snapshots but I checked in case and nothing came up either.
I ran Clean My Mac X and it said I only had 6 GB of junk data so I am just confused why the system data is taking up so much space.
May I use a portion of your TM Purging verbatim on another Thread I am in ?
This is my view of my storage.
And what I get when I run OmniDiskSweeper
Of course my friend. :)
And what does Manage look like there?
Nothing has changed and now it says this. This was taken one minute later
My System size is 166.3 GB?
