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I'm using a mid-2015 iMac with 1TB SSD.
Still using Sierra - there's some old software I want to keep using.
Recently it began to slow down and I discovered that the system file had bloated to over 600GB!
What is going on and how do I get it back within common sense?
Note - I did consider updating the system anyway but - can't seem to get the Updater to run.
Also note - I'm no geek - complex cleaning procedures will give me a brane crash.
iMac 27″, macOS 10.12
Start with this...
Safe Boot, (holding Shift key down at startup), does the problem occur in Safe Mode? Could take 10 minutes.
Safe mode attempts to repair Disks & clears lots of caches & loads safe Drivers, & prevents loading of 3rd party extensions, so if Safe Mode works try again in regular boot.
Start with this...
Safe Boot, (holding Shift key down at startup), does the problem occur in Safe Mode? Could take 10 minutes.
Safe mode attempts to repair Disks & clears lots of caches & loads safe Drivers, & prevents loading of 3rd party extensions, so if Safe Mode works try again in regular boot.
Have you emptied the trash lately?
Terminal code to clean DocumentRevisionsfolder…
https://discussions.apple.com/thread/253231342?answerId=256043117022#256043117022
System Memory OS 10.12.6 Sierra - Apple Community
Look for iOS backups…
/Users/YourUserName/Library/Application Support/MobileSync/Backup
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
All the advise offered by previous Contributor should be able to reduce even further the Space issue being experienced.
Since aspects of the system appear to be Compromised " Safari Missing, Recovery Mode not working and never using Time Machine never being used and still a Space Issue "
Suggest downloading the Application Etrecheck directly from a well respected ASC Contributor.
Disclaimer: I am not affiliated with nor receive compensation from the Developer.
The application is free or paid from added features.
Run the application with Full Disc Access ( Security & Privacy - Full Disc Access ).
It will take a Snap Shot - both the hardware and software.
The Report will Not Reveal Any Personal Information.
Post back the Full Report - copy and paste - using the Additional Text Icon ( 3rd Icon to last )
We can have a look at the report for possible issues and may have possible suggestions to resolve the issues.
Any Third Party Applications that will interfere with the normal operation of the OS, alter, modify, remove or delete or attempt to do so is an invitation for disaster and may require a Reinstallation of the OS.
This includes AntiVirus, Cleaners, Optimizes, UnInstaller etc.
The The Built in Security is all that is required.
Done all these - none of them freed more than a few gB of space.
I'm talking about a system that has blown out to nearly 700gB so I think that it's more than a few duplicated files and old movies, right. I would like to know what happened so I can prevent it in future. Spent some time chatting to Apple yesterday - clueless. I think I might like to upgrade to Mohave but unfortunately I accidentally deleted Safari some time ago and guess what - I can't download any version of 10.14 without it. Chrome and Firefox bring up the page with no download button. So I tried MacOS Recovery to reinstall Sierra but - Command R - computer will not start at all. Aaaaarrrrrgggghhh!
I like the idea that it's a Time Machine problem though. I've never used it as the first time I tried it simply did sequential backups and filled a lot of storage space very quickly! Avoided it since as I was too **** lazy to solve the problem.
That took out about 100mG - I'm trying to clear out about 450gB!
Nope. All I got was 'unrecognised verb'
Massive system file
