


APFS says I’m using 905 GB. The filesystem can only find ~612 GB. Where did 200+ GB go?
APFS says I’m using 905 GB. The filesystem can only find ~612 GB. Where did ~250 GB go?
I’ve been chasing a storage issue on macOS for weeks and am looking for a sanity check before I wipe/reinstall.
What I’m seeing:
- 1 TB SSD
- APFS container reports 905 GB used
- DaisyDisk shows ~216 GB “Hidden Space”
ducan only account for ~612 GB on the Data volume
Relevant numbers:
diskutil apfs list
APFS Data volume:
870.6 GB
But:
sudo du -xhd 1 /System/Volumes/Data
returns:
612 GB
Things I’ve already ruled out:
- Time Machine snapshots
- Local snapshots
- VM/swap files
- Spotlight
- Document Revisions
- CloudDocs/iCloud cache (currently only a few hundred MB)
One possibly relevant detail: this started after a major iCloud Desktop/Documents sync disaster involving hundreds of GB of data. The iCloud mess is gone, but the missing space remains.
Has anyone seen APFS report ~250 GB more usage than du can find?
At this point I’m trying to determine whether this is:
- APFS accounting corruption
- Orphaned extents/blocks
- Some APFS storage category that normal tools can’t see
- Something else entirely
Any diagnostic commands or ideas before I boot into Recovery and run fsck_apfs?
[AI disclosure: Claude helped me troubleshoot and write up this issue]