Caught the culprit of macOS system data
by Poster
May 20, 2025
42
Terminal input
```
diskutil list
```
Focus on
```
APFS Snapshot com.apple.os.update-... 10.3 GB diskXXXX
```
[Online information shows] (https://arstechnica.com/gadgets/2020/11/macos-11-0-big-sur-the-ars-technica-review/# page-11) From * * Catalina * * A security mechanism is introduced to handle update files, which increases with time and update frequency. mac will automatically manage and regularly remove redundant files in this volume, but the actual experience is that the system will only allow it to continue to grow. * * The faster the system is updated, the larger the directory will be * *.
The cleaning method is to temporarily close the SIP mount directory. For details, the directory can be sorted out. Currently under research... If V friends find other findings, please feel free to share them below.
Replies
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Anonymous2098 May 20, 2025APFS Snapshot com.apple.os.update-... 11.2 GB disk3s3s1
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Anonymous339 May 20, 2025This snapshot has always been about 11GB. In fact, it is the previous version of the system. It is used for rollback when the update fails. The occupancy seems to have always been so large and will not get bigger and bigger
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Anonymous2063 May 20, 2025APFS Snapshot com.apple.os.update-... 11.3 GB
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Poster May 20, 2025@ Anonymous2098 @ Anonymous339 @ Anonymous2063 It used to be more than 37GB here, but it was only more than 10GB after the completion
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Anonymous4451 May 20, 2025I am also 11.2 GB
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Anonymous4452 May 20, 2025I haven't paid attention to how much this occupies But obviously, if you download the update and before you restart the computer to update, you will obviously find that there is a lot less disk space But it will be restored after the update and restart is completed. It should be something similar to windows, a system backup
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Anonymous893 May 20, 202514.8 G
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Anonymous4453 May 20, 2025APFS Snapshot com.apple.os.update-... 11.2 GB The old MacBook, which has been used for 6 years, every time a new version is released, whether it is a big version or a small version, it must be updated, and I haven't found that it is getting bigger and bigger.
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Anonymous4454 May 20, 2025Before using GrandPerspective, I found that there are a large number of core dump files under/cores, which cannot be displayed by the disk space tool that comes with the system
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Anonymous3017 May 20, 2025This shows the full size of the snapshot. The actual occupancy should only be incremental?
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Anonymous2113 May 20, 2025m1 mbp, updated all the way, also 11.2 GB
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Anonymous4455 May 20, 2025APFS Snapshot com.apple.os.update-... 11.3 GB
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Anonymous1839 May 20, 2025APFS Snapshot com.apple.os.update-... 14.8 GB disk3s1s1
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Anonymous4456 May 20, 2025Logically analyze it, if it is monotonously increasing, you won't wait until today to find out, there are so many old Macs in the world
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Anonymous8465 May 20, 2025APFS Snapshot com.apple.os.update-... 11.2 GB
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Anonymous4457 May 20, 2025APFS Snapshot com.apple.os.update-... 11.2 GB disk3s3s1
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Anonymous8105 May 20, 2025APFS Snapshot com.apple.os.update-... 11.2 GB disk5s2s1
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Anonymous3004 May 20, 2025My Mac has 109G System Date
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Anonymous4458 May 20, 2025List local snapshots sudo tmutil listlocalsnapshots/ Delete Snapshot Sudotmutildeletelocalsnapshots [name] gpt said
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Anonymous4459 May 20, 2025APFS Snapshot com.apple.os.update-... 14.8 GB disk3s1s1 Why is this so big for me.