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Question:

Question: macOS High Sierra – Huge System Storage

Look how huge is the system storage:

User uploaded file

Is anyone having the same problem than me? I do not konw why this is happening.

MacBook Pro TouchBar and Touch ID, macOS High Sierra (10.13), 13", 1TB SSD, 16GB RAM, 3,3 GHz

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Question marked as Helpful

Sep 28, 2017 7:17 PM in response to rafaelalvesgb In response to rafaelalvesgb

Found yesterday on developers forum - try to delete one folder in the time mashine preferences, may be it will help against loosing of free space. But the most people recommend to reinstall the system from “zero” and information than from backup, but not from TImeMashine - better to use third-party program. I don’t know, if it is actual know, because the people there tried to correct beta-versions of HS

Question marked as Helpful

Sep 29, 2017 7:09 AM in response to rafaelalvesgb In response to rafaelalvesgb

Turned to our good friend Google and I found that Time Machine local backups were the reason and 'sudo tmutil disablelocal' command was supposed to help, if only "disablelocal" verb had not been removed from High Sierra. So back to square one.


Did some digging a.k.a. opened the manual for tmutil. I found that there were two useful verbs "listlocalsnapshots" and "deletelocalsnapshots". Used the first one to get the exact date stamps required for the second one and deleted all local snapshots manually.


Result: "System" went from 158GB to 20GB.


Step by step I went as following:

Code:


sudo tmutil listlocalsnapshots /

This resulted:

Code:


com.apple.TimeMachine.2017-09-27-005259

com.apple.TimeMachine.2017-09-27-104645

com.apple.TimeMachine.2017-09-27-114218

com.apple.TimeMachine.2017-09-27-124220

I took these four date stamps and followed the next command with each as following:

Code:


tmutil deletelocalsnapshots 2017-09-27-005259

So in the end if i double checked with

Code:


sudo tmutil listlocalsnapshots /

there were no snapshots and after checking "About This Mac -> Storage" I was overjoyed!


Hope this helps!

Credits to Mac Rumors user: lainvoo

Question marked as Helpful

Oct 10, 2017 3:43 PM in response to jb64 In response to jb64

Hi, jb64, thank for your help. Your post was very useful.


But, I have some questions about the support article that you mentioned:

1) If was really the Time Machine snapshots the cause of the huge system storage, why my Finder window include local snapshots in their calculations of the storage space available on a disk, as you can see below? The amount is the same of "About This Mac". This seems not right.

User uploaded fileUser uploaded file


2) I'm not a IT guy (actually, I'm a lawyer), but, if I understood correctly, sometimes the OS uses speed of SSD (instead use memory). This action of macOS storage snapshots does not make the MacBook be slow?



Anyway, I schedule a call with AppleSupport to see this matters more accurately and after orientation I'll post the proper informations here.

There’s more to the conversation

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Sep 25, 2017 4:46 PM in response to rafaelalvesgb In response to rafaelalvesgb

Oddly enough, after restarting the computer, the system storage increased by 2GB while the total increased by almost 100GB. I really do not know what's going on. Anyone has any idea about what is happening?


User uploaded file

And, before that, it was more oddly than ever. Look at this:

User uploaded file

Sep 25, 2017 4:46 PM

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Sep 26, 2017 12:48 PM in response to Max74 In response to Max74

I reinstalled the system today, but the problem still remains.


I believe the system has duplicated all (or some) files. I do not know if this is happened because (a) of FileVault, (b) installation problem or (c) the new Apple AFS architecture files.

Sep 26, 2017 12:48 PM

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Sep 28, 2017 7:31 AM in response to rafaelalvesgb In response to rafaelalvesgb

Someone said to me that could be a problem with Time Machine. I don't think so, because my backup is updated until today, as you can see below:

User uploaded file

In "About This Mac" it was possible see the amount of storage destined to TimeMachine. In mine this it is not shown. I do not know if it is because my backup is updated or if it is because there is a problem.


Any suggestions or solutions?

Sep 28, 2017 7:31 AM

Reply Helpful
Question marked as Helpful

Sep 28, 2017 7:17 PM in response to rafaelalvesgb In response to rafaelalvesgb

Found yesterday on developers forum - try to delete one folder in the time mashine preferences, may be it will help against loosing of free space. But the most people recommend to reinstall the system from “zero” and information than from backup, but not from TImeMashine - better to use third-party program. I don’t know, if it is actual know, because the people there tried to correct beta-versions of HS

Sep 28, 2017 7:17 PM

Reply Helpful (2)

Sep 28, 2017 3:45 PM in response to Max74 In response to Max74

I reinstalled the system (but not from "zero" yet). The performance has improved a little bit, altough MacBook Pro is still heating.


Which folder in the TimeMachine Preferences I have to delete? Just one or all folders? If first option, I should to delete any folder or a specific one? In this last case, which one?


In this developers forum, did anyone raise the possibility of duplicated files?

Sep 28, 2017 3:45 PM

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Sep 28, 2017 5:17 PM in response to rafaelalvesgb In response to rafaelalvesgb

It is possible AFS taking time to be implemented, probably, because I'm with FileVault turned on?


Today, I went to "About This Mac" again and, for my surprise, the system is was with "just" 404,55GB, and 264,74GB of free space (before was 249,69GB):

User uploaded file

Maybe is a problem with spotlight also. I do not know. I will monitor the discussion and give updates until I find a solution for this.

Sep 28, 2017 5:17 PM

Reply Helpful
Question marked as Helpful

Sep 29, 2017 7:09 AM in response to rafaelalvesgb In response to rafaelalvesgb

Turned to our good friend Google and I found that Time Machine local backups were the reason and 'sudo tmutil disablelocal' command was supposed to help, if only "disablelocal" verb had not been removed from High Sierra. So back to square one.


Did some digging a.k.a. opened the manual for tmutil. I found that there were two useful verbs "listlocalsnapshots" and "deletelocalsnapshots". Used the first one to get the exact date stamps required for the second one and deleted all local snapshots manually.


Result: "System" went from 158GB to 20GB.


Step by step I went as following:

Code:


sudo tmutil listlocalsnapshots /

This resulted:

Code:


com.apple.TimeMachine.2017-09-27-005259

com.apple.TimeMachine.2017-09-27-104645

com.apple.TimeMachine.2017-09-27-114218

com.apple.TimeMachine.2017-09-27-124220

I took these four date stamps and followed the next command with each as following:

Code:


tmutil deletelocalsnapshots 2017-09-27-005259

So in the end if i double checked with

Code:


sudo tmutil listlocalsnapshots /

there were no snapshots and after checking "About This Mac -> Storage" I was overjoyed!


Hope this helps!

Credits to Mac Rumors user: lainvoo

Sep 29, 2017 7:09 AM

Reply Helpful (32)

Sep 29, 2017 7:14 AM in response to Gin-Luke In response to Gin-Luke

Gin-Luke, thank you for your contribution. Your tip was very helpful and useful. I follow the steps of that post and find this:


User uploaded file

Now I can understand a little bit the situation. But I think there are still remain problems. Lets go talk about them.


1) My user folder has 100GB of photos and 1,24GB of Music, as you can see in the photo below (I used "Get Info" function on all folders that are in my user folder), but I could'nt find the other 170GB of storage. I think this is a system problem. Any ideas?


User uploaded file


2) Actually, it appears that users folder's storage (function "Get Info") is higher than informed on Terminal: 296,66GB, instead of 273GB. It might be a Spotlight problem?


User uploaded file

3) Shouldn't the macOS consider iPhoto Library as "photos" instead files of System? Isn't this a error/bug?


4) The system normally has 40GB up to 50GB of storage. So, considering that mine is with 532GB, and my user folder has 296,GB, I still have 185GB (approximately) that still has origin unknown. Any ideias about it?

Sep 29, 2017 7:14 AM

Reply Helpful (1)

Oct 7, 2017 5:50 PM in response to rafaelalvesgb In response to rafaelalvesgb

I investigated this after having the same problem and came across this https://discussions.apple.com/thread/7691903?answerId=32229679022#32229679022&start=45&tstart=0


Time Machine in macOS High Sierra stores snapshots on every APFS-formatted, all-flash storage device in your Mac or directly connected to your Mac. Time Machine in earlier macOS versions stores snapshots only on the internal startup disk of Mac notebook computers.

To make sure that you have storage space when you need it, snapshots are stored only on disks that have plenty of free space. When storage space gets low, snapshots are automatically deleted, starting with the oldest. That's why Finder and Get Info windows don't include local snapshots in their calculations of the storage space available on a disk. https://support.apple.com/en-us/HT204015

Oct 7, 2017 5:50 PM

Reply Helpful (3)
Question marked as Helpful

Oct 10, 2017 3:43 PM in response to jb64 In response to jb64

Hi, jb64, thank for your help. Your post was very useful.


But, I have some questions about the support article that you mentioned:

1) If was really the Time Machine snapshots the cause of the huge system storage, why my Finder window include local snapshots in their calculations of the storage space available on a disk, as you can see below? The amount is the same of "About This Mac". This seems not right.

User uploaded fileUser uploaded file


2) I'm not a IT guy (actually, I'm a lawyer), but, if I understood correctly, sometimes the OS uses speed of SSD (instead use memory). This action of macOS storage snapshots does not make the MacBook be slow?



Anyway, I schedule a call with AppleSupport to see this matters more accurately and after orientation I'll post the proper informations here.

Oct 10, 2017 3:43 PM

Reply Helpful (5)
User profile for user: rafaelalvesgb

Question: macOS High Sierra – Huge System Storage