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joshuaaravind

macrumors newbie
Original poster
Jul 31, 2019
1
0
How can I delete my system files? I don't have any time machine back-up and I don't use apple mail either.
Please help!
 

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posguy99

macrumors 68020
Nov 3, 2004
2,290
1,531
How can I delete my system files? I don't have any time machine back-up and I don't use apple mail either.
Please help!

If you were to delete "system files", then the Mac would not boot. The question is, what's in there that the OS is classifying as "system files". Have a lot of VM's?
 

velocityg4

macrumors 604
Dec 19, 2004
7,340
4,727
Georgia
Start at the root folder of your drive. Switch the view to detailed view. Then turn on "Calculate All Sizes" in the view options. From there you can sort through the folders. Going up levels through gigantic folders. To see if you can find a culprit database or log which has run out of control.

https://www.imobie.com/support/mac-folder-size.htm

You may need to show hidden files (Command-Shift-Period)
 

Honza1

macrumors 6502a
Nov 30, 2013
940
441
US
How can I delete my system files? I don't have any time machine back-up and I don't use apple mail either.
Please help!

macOS seems to have very broad definition of System Files. Basically, anything which does not fit in any other category is System File in this view. You will need to do more research to figure out if it is real problem, some type of data you have or even transient issue.
macOS is doing snapshot backups to local disk, even if you do not use TimeMachine. It is keeping snapshots for a day or two. These can be listed, deleted, or thinned (google it, instructions are on line). But these would be thinned automatically if you started to run out of space, so if this is the case it is not a problem. In other words, it may fix itself if you have recently copied/deleted significant amount of data.
There were (rare) reports, though, that system misbehaved and somehow created some System files which eventually filled the drive and crashed system. Search in this forum may help.

I had very good experience with free tool OmniDiskSweeper (www.omnigroup.com/omnidisksweeper), which was able to read sizes of different folders on my disk surprisingly well.

Do NOT delete any files unless you know what you are doing, it may destroy the system.
 

kohlson

macrumors 68020
Apr 23, 2010
2,425
737
From your screenshot, I can see why you're asking. When I check my disk using the same method, it started saying System was 197GB, but then after a few minutes went to 130 GB. But clicking on the "Manage" tab won't show any more detail for System, so DaisyDisk or OmniDisk Sweeper are good suggestions. I also use DiskInventoryX.

The About This Mac - Storage tab shows you areas you put there, such as Documents, Movies, Photos. Everything else is lumped together as System. This is a very high-level view of what's happening in your Mac's storage. Use the apps mentioned above to see what you have that's taking up unwanted space.
 

Fishrrman

macrumors Penryn
Feb 20, 2009
29,279
13,377
OP:
Do you use time machine?
If so, have you tried deleting "local snapshots"?
 
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