macOS 27 Took 30 GB of Disk Space: Where It Went, What Comes Back

You upgrade to macOS 27 Golden Gate on a Mac that had plenty of room, and a day later the free-space figure has collapsed. On some Macs it drops by well over 100 GB. A few days after that most of it comes back — but not all of it. Something in the order of 20 to 30 GB stays gone, and System Settings has a new line in Storage that explains where much of it went: Apple Intelligence. This guide separates the temporary spike from the permanent cost, shows you what Apple says the AI models should occupy versus what people are actually measuring, and walks through what you can reclaim safely — and the things you should not touch no matter what a cleaning app tells you.

Key Takeaways

• The first 24–72 hours are not representative. Howard Oakley's day-by-day tracking of a Mac mini M4 Pro showed used space rising to a peak of about 150 GB above its pre-upgrade level 24 hours after the upgrade, then falling back to about 30 GB above where it started. Do not start deleting things on day one.
• The permanent cost is mostly AI models. Storage settings on that Mac attributed 29.45 GB to AI. MacRumors measured 20.67 GB on another M4 Pro Mac mini; Ars Technica recorded 22.42 GB on an M3 MacBook Air and roughly 14 GB on an M1 MacBook Air and a MacBook Neo.
• Apple's own figure is lower. According to Apple's support documentation as reported by MacRumors, the latest Apple Intelligence features need up to 14 GB on Macs with M3 or later and at least 12 GB of memory, and up to 8 GB on other supported Macs. Measured usage above those figures has not been explained by Apple.
• You cannot fully opt out any more. MacRumors reports that macOS 27 removed the switch that turned Apple Intelligence off entirely, so the model download is not optional. Turning Siri AI off has freed around 12 GB in one reported case, but about 25 GB remained.
• Much of this space is treated as purgeable. macOS can evict downloadable assets when it genuinely needs room, which is why the Finder's "available" figure and the raw df figure can disagree by tens of gigabytes.
• The biggest safe wins are usually elsewhere. On our own test Mac, old iOS Simulator runtimes occupied more space than every Siri and language asset combined. Clear those, and thin old snapshots, before worrying about the AI models.

What Actually Happened to the Free Space

The clearest public record of the upgrade's effect on storage comes from Howard Oakley at The Eclectic Light Company, who had been logging used space on the boot container and on his Time Machine backup disk every day for more than five weeks before and after the upgrade. The setup is worth spelling out because it makes the numbers meaningful:

Detail	Value
Mac	Mac mini M4 Pro
Internal SSD free space at start	1.15 TB
Backup disk	2 TB external SSD, 874 GB free
Tracking period	10 August – 17 September 2026 (38 days)
Before the upgrade	Tahoe 26.6.2, installed 17 August
Upgrade	Golden Gate 27.0 on 14 September
Normal growth of the boot container	about 1.6 GB per week
Normal growth of the backups	about 7.6 GB per week

Against that slow, steady baseline, the upgrade is impossible to miss. Used space climbed steadily after installation and reached a peak of about 150 GB above the previous level 24 hours later. Over the following days it fell back, but it did not return to the baseline. It levelled off about 30 GB higher than before the upgrade. The backup set grew by about 10 GB as the first backups after the upgrade captured the new system components.

That shape — a large, short-lived spike on top of a smaller permanent step — is the key to reading your own Mac correctly. The spike is a maintenance phenomenon. The step is the new cost of running macOS 27.

Why the spike happens

Oakley's measurements tell you how big and how long the spike was; they do not itemise what filled it. Several things are known to happen after a major upgrade, and together they are consistent with what he saw:

• Spotlight rebuilds its index from scratch. Oakley notes that macOS 27 rebuilds the entire search index after the upgrade, and we have covered how long that takes and how to monitor it in our guide to Spotlight reindexing after macOS 27. A fresh index is written alongside the old one before the old one is discarded.
• Assets download in the background. Apple Intelligence models, Siri speech and understanding assets, dictation and translation packs, fonts and search resources arrive after the first boot, not with the installer. Apple's release notes even list a fixed issue where search assets downloaded slowly "for languages and regions other than English and the United States" for "up to a few hours" after an upgrade (178186226).
• iCloud and Photos re-sync. Photo analysis and iCloud Drive reconciliation often restart after a major upgrade and can create temporary caches.
• Local snapshots are taken. Time Machine, if enabled, takes hourly local snapshots, and the first backups after an upgrade are large because so much of the system has changed. Those snapshots pin the old versions of changed files until they are thinned.
• The installer's own leftovers. The staged update and its working files are cleaned up after a successful upgrade, but not instantly.

None of these is under your direct control, and none of them is a fault. The practical rule is simple: wait at least three days, restart once, and only then measure. If your free space is still dropping after a week, something is wrong and the troubleshooting section below applies. If it has stopped dropping, what remains is the real cost.

The Permanent Cost: What Apple Says Versus What People Measure

After the spike subsides, the space that stays gone is dominated by one thing. On Oakley's Mac, Storage settings attributed 29.45 GB to AI support after the upgrade. He was careful to note that he could not be certain whether that figure also included components installed with Xcode 27, so treat it as an upper bound for that Mac rather than a pure measurement of Apple Intelligence.

Other measurements, collected by MacRumors on 23 September, show the same pattern across different hardware:

Mac	Apple Intelligence storage reported	Source
Mac mini M4 Pro	29.45 GB	Eclectic Light Company
Mac mini M4 Pro	20.67 GB	MacRumors
MacBook Pro M3 Pro	24.35 GB	Reddit user, cited by MacRumors
MacBook Air M3	22.42 GB	Ars Technica (fresh install of 27.0 beta 7)
MacBook Air M1	about 14 GB	Ars Technica
MacBook Neo	about 14 GB	Ars Technica
Unspecified Mac, macOS 27 RC	30.16 GB	Reddit user, cited by MacRumors

Apple's published figures, as reported by MacRumors, are much lower: the latest Apple Intelligence features require up to 14 GB of storage on Macs with an M3 chip or later and at least 12 GB of unified memory, and up to 8 GB on other Apple Intelligence-capable Macs. The M3-and-12 GB split mirrors the two tiers of on-device capability we described in which Macs get the full Siri AI: the higher tier runs larger models locally, and larger models take more space.

Two things stand out. First, the Macs in the higher tier consistently report more than Apple's "up to 14 GB". Second, the M1 and MacBook Neo figures of about 14 GB are well above the "up to 8 GB" Apple gives for their tier. Apple has not explained the gap. The most plausible explanations are that the Storage category includes more than the language models themselves (speech, translation and vision assets, for example), or that older versions of assets linger until they are cleaned up — but both are inferences, not documented behaviour, so do not rely on them.

Why you cannot simply switch it off

Earlier releases let you turn Apple Intelligence off and, with it, avoid most of the model downloads. According to MacRumors, Apple removed that toggle in macOS 27 and iOS 27. The models download regardless of whether you use them; only using the features is optional. That is a real change for anyone who deliberately kept Apple Intelligence disabled on a small-SSD Mac to save space.

What you can still turn off is Siri AI itself. One reader of Oakley's follow-up column reported that with Siri AI on, the AI category was 37.7 GB, and after turning Siri AI off it immediately fell to 25.29 GB, reclaiming about 12.4 GB. The remaining 25 GB stayed. Oakley's own summary is blunt: you cannot reclaim all the space AI uses, but the system treats much of it as purgeable, and recovery is not always instant because some cleanup happens during background maintenance.

For a 256 GB Mac, the arithmetic is uncomfortable. Oakley estimates about 28 GB for the system itself and "more likely" around 30 GB for AI — close to 58 GB of a 256 GB drive before you install a single app. On 512 GB and larger Macs the cost is noticeable but rarely critical.

Where the AI Models Live on Disk

You will not find the models in the Finder, and you should not go looking for them with a cleaning utility. It is still useful to know where they are, because it explains why they behave the way they do.

Apple delivers these components as MobileAsset downloads rather than as part of the signed system volume. They are stored under /System/Library/AssetsV2, which looks like part of the read-only system but is not. The file /usr/share/firmlinks lists that path as a firmlink to the Data volume:

grep -i assets /usr/share/firmlinks

On our test Mac that prints four entries: Assets, PreinstalledAssets, AssetsV2 and PreinstalledAssetsV2, each mapped to the same path on the Data volume. You can confirm where the space is actually charged with df:

df -h /System/Library/AssetsV2

It reports /System/Volumes/Data, not the system volume. That matters in two ways. Assets count against the same free space as your documents, and Apple can add, replace and remove them without a full system update — which is exactly what happens in the days after an upgrade.

What we measured on our test Mac

We do not yet have macOS 27 on our main test Mac, so we cannot show the Golden Gate models in place. We can show what the same mechanism already stores on Tahoe, which gives a realistic picture of the categories involved. This is an Apple silicon Mac with a 1 TB SSD running macOS Tahoe 26.5.2 (25F84), measured on 24 September 2026:

for d in /System/Library/AssetsV2/*/; do
  s=$(du -sk "$d" 2>/dev/null | cut -f1)
  [ "${s:-0}" -gt 102400 ] && echo "$((s/1024)) MB  $(basename "$d")"
done | sort -rn

Asset folder	Size on our Mac
com_apple_MobileAsset_iOSSimulatorRuntime	16,349 MB
com_apple_MobileAsset_LinguisticData	3,015 MB
com_apple_MobileAsset_UAF_Siri_Understanding	2,512 MB
com_apple_MobileAsset_Font8	1,105 MB
com_apple_MobileAsset_UAF_Translation_Assets	832 MB
com_apple_MobileAsset_SpotlightResources	385 MB
com_apple_MobileAsset_UAF_Speech_AutomaticSpeechRecognition	380 MB
com_apple_MobileAsset_UAF_Siri_TextToSpeech	114 MB
com_apple_MobileAsset_ContextKit	106 MB

The whole of AssetsV2 came to 25 GB. Several things in that table are worth noticing:

1. The largest item has nothing to do with AI. More than 16 GB is an iOS Simulator runtime installed by Xcode. On a developer's Mac, simulator runtimes are routinely a bigger storage problem than Apple Intelligence.
2. The UAF_ prefix marks the family. The Siri understanding, translation, speech recognition and text-to-speech assets all share it, as do smaller components with names such as UAF_FM_Overrides, UAF_IF_Planner and UAF_SummarizationKitConfiguration. When the macOS 27 models land, expect them under the same parent folder.
3. The big foundation model is not there. On this Tahoe Mac we found no large FM generative-model asset, only configuration-sized ones. That is the component responsible for most of the macOS 27 increase, and its absence here is a reminder that a Mac's AI storage depends on what has actually been downloaded, not on the chip alone.

Do not delete anything inside AssetsV2 by hand. The folders are owned by the system, macOS tracks which asset versions it believes are present, and removing files underneath it tends to produce either a silent re-download or a feature that fails in confusing ways. The correct levers are the settings covered below.

The cryptexes in Preboot

A second, smaller part of the system lives outside both the system and Data volumes. Since macOS Ventura, Apple has shipped Safari and parts of the system as cryptexes, stored on the Preboot volume so they can be updated independently. On our Mac:

du -sh /System/Volumes/Preboot/Cryptexes/*

reported 6.3 GB for OS, 6.3 GB for Incoming, 40 MB for App and nothing for ExclaveOS, while diskutil apfs list reported the whole Preboot volume consuming 9.0 GB. The two figures do not add up, and they are not supposed to: du counts files, while APFS reports the blocks actually allocated, and clones share blocks. Use diskutil for sizes on system volumes, and treat du as a way to see what is there rather than how much it costs. Preboot is not something to manage manually in any case; we explained why in our guide to APFS snapshots and hidden volumes.

Reading the Storage Pane Correctly

System Settings > General > Storage is the place most people look first, and in macOS 27 it is also where Apple Intelligence shows up by name: MacRumors describes it as appearing beside the macOS entry. Three habits make that pane more useful.

Wait for it to finish calculating. The bar and the category list are filled in progressively. A category shown immediately after opening the pane can grow or shrink substantially a minute later.

Hover rather than guess. Hovering over a segment of the bar gives its size. The categories are not always the same as folders; "System Data" in particular is a catch-all, and in the days after an upgrade it is inflated by exactly the maintenance work described above. We cover that category on its own in System Data storage huge or won't shrink.

Compare with the command line. The Finder's "available" figure includes purgeable space; df does not. Running both side by side tells you how much of the apparent shortage is space macOS will give back on demand:

df -h /System/Volumes/Data
diskutil info / | grep -E "Container Free Space|Volume Free Space"

On our Mac, diskutil reported 339.1 GB of container free space. If your Finder reports noticeably more than diskutil, the difference is purgeable content — much of which, after an upgrade to macOS 27, is AI and language assets that macOS considers re-downloadable.

What "Purgeable" Means for the AI Models

Purgeable space is space that holds something macOS can delete and fetch again if it needs to: cached iCloud files, downloaded assets, some caches. It is counted as used by df and as available by the Finder. When an app asks for more space than is truly free, macOS evicts purgeable items to make room.

Oakley notes that the disk space used to support AI "is considered purgeable should the need arise". In practice that has three consequences:

• You will usually not hit a hard wall because of the models. If you copy a large file and the disk is genuinely short, macOS should evict purgeable assets first.
• The eviction is not instant. Some of it happens only during background maintenance, which is why you can see an "insufficient space" warning while the Finder still shows room.
• Evicted assets come back. If Apple Intelligence or Siri needs a model that was purged, it will download it again. On a Mac that constantly runs near full, that turns into a cycle of downloads and evictions. The real fix is freeing space elsewhere.

That last point is why you should not treat purgeable space as a reserve. If your Mac only works because macOS keeps throwing away its AI models, it is too full.

Reclaiming Space Safely, in Order

Here is the sequence we recommend. Each step is reversible or low-risk, and each one is worth doing before the next.

1. Let the post-upgrade work finish

Give the Mac three days with normal use, keep it plugged in overnight at least once, then restart it. Check free space before and after. Most of the 150 GB-style spike should be gone on its own. If Spotlight is still indexing, the progress appears when you search; our Spotlight reindexing guide shows how to tell normal progress from a stuck index.

2. Thin old local snapshots

Local Time Machine snapshots taken around the upgrade pin the old versions of every file that changed. List them first:

tmutil listlocalsnapshots /

Our Mac returned an empty list, which is normal when Time Machine is not writing to a local disk. If yours lists many snapshots dated around the upgrade and space is genuinely tight, ask macOS to thin them:

tmutil thinlocalsnapshots / 50000000000 4

That asks for up to 50 GB to be reclaimed, at the highest urgency. macOS will not delete the snapshot it is currently relying on, and it will not touch the system's own sealed-volume snapshot. Our APFS snapshots guide explains which snapshot must never be deleted and why.

3. Remove simulator runtimes you no longer use (developers)

This was the largest single item on our Mac. List what is installed:

xcrun simctl runtime list

Ours showed two iOS runtimes, iOS 26.0 (23A343) and iOS 18.5 (22F77), totalling 15.7 GB of disk images. Each runtime is also mounted as its own APFS container — diskutil apfs list showed volumes named "iOS 26.0 Simulator", "iOS 18.5 Simulator" and "iOS 18.5 Simulator Bundle" at 16.7 GB, 20.2 GB and 8.8 GB — so the true footprint of old runtimes is easy to underestimate. Remove the ones you do not test against:

xcrun simctl runtime delete --notUsedSinceDays 90 --dry-run
xcrun simctl runtime delete --notUsedSinceDays 90

Run the --dry-run form first to see what would go. You can also remove a runtime by the identifier shown in the list output, or from Xcode's Settings > Components. With Xcode 27 installing new runtimes for the 27 SDKs, the older ones are often dead weight.

4. Decide whether you want Siri AI

If you do not use Siri AI, turning it off is the only AI-related switch that has been shown to free a meaningful amount of space — about 12.4 GB in the reported case. You will find it in System Settings under Siri. This does not remove Apple Intelligence as a whole (that switch no longer exists), and the saving may take time to appear because cleanup can happen during background maintenance. If you turn Siri AI back on later, the models download again.

If you are still waiting for access, remember that turning Siri off and on again does not move you up the queue; we explained how that waitlist works in Siri AI has a waitlist on macOS 27.

5. Trim languages you do not use

Speech, dictation and translation assets are downloaded per language. If you once added a second dictation language or downloaded translation languages you no longer need, removing them in the relevant settings (Keyboard > Dictation for dictation languages, and the Translate app's downloaded languages) lets macOS release those assets. Oakley also found that Siri AI tools fail to appear unless the Preferred Language in Language & Region matches the language set for Siri, so if you change one, check the other.

6. The ordinary clean-up

After the system-specific steps, the usual suspects apply: old iOS and iPadOS device backups, Mail attachments, the Downloads folder, large files you have forgotten about. Storage's Recommendations section can surface several of these. In our case ~/Library/Caches alone was 14 GB, which is typical and mostly safe to leave to the apps that own it rather than delete by hand.

Time Machine: Why Your Backups Grew Too

Oakley's backup set grew by about 10 GB because of the upgrade, on top of its normal 7.6 GB per week. The first backup after a major upgrade has to capture everything that changed on the Data volume — and on macOS 27 that includes the new asset folders. Expect it to be slower and larger than usual.

Two consequences follow. If your backup disk was already close to full, Time Machine will start deleting the oldest backups sooner. And if you still keep backups on an encrypted HFS+ disk, this is a good moment to plan the move to APFS: Apple's macOS 27 release notes say Encrypted HFS+ (CoreStorage) "is deprecated and will not be supported in a future version of macOS" (175892420), a change we covered in encrypted HFS+ dropped in macOS 28.

A Five-Minute Storage Audit for macOS 27

Run these once the post-upgrade spike has passed. They are all read-only.

# 1. Container free space as APFS sees it
diskutil info / | grep -E "Container Free Space"

# 2. Every volume in the boot container and what it consumes
diskutil apfs list | grep -E "Name:|Role|Capacity Consumed"

# 3. The largest downloadable asset families
for d in /System/Library/AssetsV2/*/; do
  s=$(du -sk "$d" 2>/dev/null | cut -f1)
  [ "${s:-0}" -gt 102400 ] && echo "$((s/1024)) MB  $(basename "$d")"
done | sort -rn | head -15

# 4. Local snapshots still pinning old data
tmutil listlocalsnapshots /

# 5. Simulator runtimes (only if Xcode is installed)
xcrun simctl runtime list

Read the results in this order: if container free space is healthy, stop. If it is not, compare the Data volume's consumption with the asset list and the snapshot list. Most of the time, the answer is one of three things — snapshots, simulator runtimes, or ordinary user data — and the AI models are a fixed cost you plan around rather than something you fight.

What Not to Do

• Do not delete folders in /System/Library/AssetsV2. They are managed by the system. Removing them by hand leads to re-downloads or broken features, and on a SIP-protected Mac many of them cannot be removed by an ordinary user anyway.
• Do not disable System Integrity Protection to "clean" the system. Nothing in this article requires it, and a Mac with SIP off is more exposed than one with less free space.
• Do not run cleaners that promise to remove "AI junk". The components they would target are either purgeable already or required for features that will simply download them again.
• Do not delete the sealed system snapshot. It is the system volume. Our APFS snapshots guide covers how to recognise it.
• Do not judge the upgrade on day one. The spike is temporary; decisions made during it tend to be wrong.

Should You Upgrade a Small-SSD Mac?

For most Macs with 512 GB or more, the extra 20–30 GB is a one-time adjustment. For 256 GB Macs, it is worth planning:

Situation	Recommendation
256 GB, less than 60 GB free on Tahoe	Clear space first. Aim for at least 60–80 GB free before upgrading so the post-upgrade spike and the new assets fit without constant eviction.
256 GB, you never use Siri	Upgrade, then turn off Siri AI once the post-upgrade work finishes. Expect about 25 GB of AI assets to remain.
256 GB, developer with Xcode	Remove unused simulator runtimes before upgrading; they are likely to dwarf the AI cost.
512 GB or more	Upgrade normally; re-measure after three days.
Macs that must stay under a storage budget (labs, kiosks)	Test on one machine first; the AI category varies from about 14 GB to about 30 GB depending on the Mac.

If your Mac will not offer the upgrade at all, that is a separate problem, which we cover in macOS 27 not showing in Software Update.

Troubleshooting Common Issues

Free space is still falling a week after the upgrade

Problem: The spike never ended; used space keeps climbing day after day.

Solution: Check the three usual causes in order. Run tmutil listlocalsnapshots / for a growing list of snapshots; check whether Spotlight is still indexing by searching for something and looking for the indexing message; open Activity Monitor's Disk tab and sort by Bytes Written to see which process is writing. A stuck index is the most common culprit and is covered step by step in our Spotlight reindexing guide. If an iCloud Photos library is re-analysing, it will write heavily for days on a large library — that one is normal.

Storage settings shows a huge AI figure, far above 30 GB

Problem: The Apple Intelligence line is much larger than the figures in this article.

Solution: First, wait for the pane to finish calculating and reopen it. Second, remember that Oakley was unsure whether his figure included Xcode 27 components, so development tools can inflate it. Third, the category may temporarily include both old and new versions of an asset while an update is in progress. Re-check after a restart and a day of normal use before drawing conclusions.

I turned off Siri AI and nothing changed

Problem: The expected 12 GB did not come back.

Solution: Oakley notes that recovery "is not instant"; some cleanup happens during background maintenance. Leave the Mac on and idle for a few hours, then restart and check again. Also note that the only published data point is a single report — your saving could be smaller, particularly on a Mac in the lower Apple Intelligence tier with smaller models.

The Finder says there is room, but an app says the disk is full

Problem: Finder shows plenty of space; an installer or an app refuses to proceed.

Solution: The Finder counts purgeable space as available; some installers check real free space. Compare with diskutil info / | grep "Container Free Space". If that figure is too small, thin snapshots and remove simulator runtimes first. macOS will also evict purgeable assets on demand, but not always quickly enough for an installer's check.

Time Machine now says the backup disk is almost full

Problem: The first backups after the upgrade pushed the backup disk to its limit.

Solution: This is expected: Oakley's backups grew by about 10 GB from the upgrade alone. Time Machine will delete the oldest backups to make room. If you want to keep older history, move to a larger disk now rather than after old backups start disappearing.

The upgrade itself failed for lack of space

Problem: The installer stopped, or the Mac restarted into a loop.

Solution: That is a different failure from the post-upgrade growth described here. Follow our recovery guide for updates that went wrong, and free space before trying again.

FAQ

Why did my Mac lose more than 100 GB right after upgrading?

The first 24 hours after a major upgrade include a Spotlight rebuild, background asset downloads, iCloud and Photos re-sync and new snapshots. On a tracked Mac mini M4 Pro, that peaked at about 150 GB above the previous level, then fell back to about 30 GB above it over the following days.

How much space does Apple Intelligence take on macOS 27?

Apple's documentation, as reported by MacRumors, says up to 14 GB on M3-or-later Macs with 12 GB of memory and up to 8 GB on other supported Macs. Measured figures range from about 14 GB (M1 MacBook Air, MacBook Neo) to 29–30 GB on some M3 and M4 Macs.

Can I turn off Apple Intelligence to get the space back?

Not entirely. MacRumors reports that macOS 27 removed the toggle to disable Apple Intelligence, so the models download regardless. Turning off Siri AI freed about 12.4 GB in one reported case, leaving about 25 GB in place.

Is the AI storage purgeable?

Much of it is. Howard Oakley notes that the space used to support AI is treated as purgeable should the need arise. macOS can evict those assets when space runs short, but eviction is not instant and the assets download again when needed.

Where are the Apple Intelligence models stored?

They arrive as MobileAsset downloads under /System/Library/AssetsV2, which is firmlinked to the Data volume. That is why they count against the same free space as your files and why Apple can update them without a full system update.

Will Time Machine back up the AI models?

Oakley's backup set grew by about 10 GB after the upgrade, so the first post-upgrade backups are clearly larger than usual. Apple has not documented exactly which asset folders Time Machine includes, so plan for a larger first backup rather than relying on exclusions.

Is macOS 27 a bad idea on a 256 GB Mac?

It is workable, but plan for roughly 58 GB of system and AI components before your own files. Free at least 60–80 GB before upgrading, remove unused simulator runtimes, and turn off Siri AI if you do not use it.

Conclusion

The storage story of macOS 27 has two parts, and mixing them up leads to bad decisions. The dramatic part — a drop of up to 150 GB in the first day — is temporary maintenance, and the right response is patience. The lasting part — somewhere between 14 and 30 GB depending on the Mac — is the price of Apple Intelligence becoming a mandatory component, and it is larger than Apple's own figures suggest. You cannot remove it entirely, but you can decide whether you want Siri AI, keep languages trimmed, and recover far larger amounts from snapshots and developer tools that nobody has looked at in months.

If you are still deciding whether to upgrade, start with our macOS 27 release-day guide. If Apple Intelligence itself will not finish downloading, see Apple Intelligence stuck preparing or downloading.

Related reading: Your Mac's disk is full of snapshots, not files · System Data storage huge or won't shrink · Which Macs get the full Siri AI in macOS 27