Storage Management

APFS (Apple File System) takes automatic snapshots before system updates. This means:

• You can roll back a failed update
• Time Machine uses APFS snapshots for hourly backups
• Snapshots can temporarily use disk space (they're cleaned up automatically)

To see snapshots:

tmutil listlocalsnapshots /

To delete local snapshots if disk space is tight:

tmutil deletelocalsnapshots 2026-03-30-120000

Storage Management

System Settings > General > Storage

• Shows a visual breakdown of disk usage by category
• Optimize Storage: removes watched movies and old email attachments
• Empty Trash Automatically: deletes items after 30 days
• Click any category to see what's using space

You can also use the terminal:

# Check disk usage
df -h

# Find large files in your home folder
du -sh ~/* | sort -rh | head -20