1. Install Mac Os High Sierra

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.

For Older Version: How to Check Updates Manually on MacOS High Sierra, EI Capitan, Yosemite, Mac OS X Lion, Leopard Go to the Apple menu > Best mac for high school students 2018. Software Updates and follow the on-screen instruction for update free and purchased the software. Below are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Mojave. And as updates to that macOS become available from the App Store or Software Update preferences, additional version numbers and builds are added to. Re: On the MacOS High Sierra Compatibility Issues peterpica Oct 10, 2017 5:57 AM ( in response to arkayny ) I WAS a beta tester and had no issues through OS 10.12.6; it was only the final release of High Sierra that ruined my usage of InDesign CS6 (8.1).

Result: 'System' went from 158GB to 20GB. Step by step I went as following.

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.

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.

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. Gin-Luke, thank you for your contribution. Your tip was very helpful and useful.

I follow the steps of that post and find this: Now I can understand a little bit the situation. But I think there are still remain problems.

Install Mac Os High Sierra

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. 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? 3) Shouldn't the macOS consider iPhoto Library as 'photos' instead files of System?

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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? I investigated this after having the same problem and came across this Time Machine in macOS High Sierra stores snapshots on every, 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. 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. 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).