My MacBook Air's storage graph shows 68.87GB in the "other" space. It's hogging more than its fair share, leaving me with notices saying my flash drive is nearly full. How can I clean out unnecessary files?
System Data taking up a large amount of storage is a common question on Mac. There is no single setting that simply “clears” System Data because this category can include a variety of files, including caches, logs, temporary files, and APFS snapshots.
If you want the most comprehensive solution, back up first, erase the Mac, and reinstall macOS.
For Apple silicon Macs, use Erase All Content and Settings. This removes your data, settings, and applications while leaving the currently installed version of macOS in place.
For Intel-based Macs, erase the Mac using Disk Utility, then reinstall macOS.
Make a current Time Machine backup before erasing anything. Apple: Back up your Mac with Time Machine
Afterward, use Migration Assistant to transfer your user account rather than the entire old system, and reinstall only the applications you actually need.
If you do not want to erase the Mac, first determine what is actually consuming the space. DaisyDisk can provide a clearer view of storage usage, and Apple documents how to view APFS snapshots in Disk Utility.
The following Apple Community discussions document additional approaches. Results can vary depending on what is responsible for the storage usage:
System data taking too much in MacOS Sono… - Apple Community
Time Machine Local Snapshot won't delete - Apple Community
- Over 60% storage blocked by System Data - Apple Community
- Running out of storage - system data is huge after upgrade to macOS Tahoe 26.2
- System Data consuming storage on Mac and how to clear it
- System Data at 114 GB AFTER deleting other files....
- How to free up System Data space on Mac
Also consider moving large personal files—particularly Photos, videos, music, and other files you control—to an external SSD. This is often a more appropriate way to free internal storage than attempting to delete files that macOS manages as System Data.
System Data taking up a large amount of storage is a common question on Mac. There is no single setting that simply “clears” System Data because this category can include a variety of files, including caches, logs, temporary files, and APFS snapshots.
If you want the most comprehensive solution, back up first, erase the Mac, and reinstall macOS.
For Apple silicon Macs, use Erase All Content and Settings. This removes your data, settings, and applications while leaving the currently installed version of macOS in place.
For Intel-based Macs, erase the Mac using Disk Utility, then reinstall macOS.
Make a current Time Machine backup before erasing anything. Apple: Back up your Mac with Time Machine
Afterward, use Migration Assistant to transfer your user account rather than the entire old system, and reinstall only the applications you actually need.
If you do not want to erase the Mac, first determine what is actually consuming the space. DaisyDisk can provide a clearer view of storage usage, and Apple documents how to view APFS snapshots in Disk Utility.
The following Apple Community discussions document additional approaches. Results can vary depending on what is responsible for the storage usage:
System data taking too much in MacOS Sono… - Apple Community
Time Machine Local Snapshot won't delete - Apple Community
- Over 60% storage blocked by System Data - Apple Community
- Running out of storage - system data is huge after upgrade to macOS Tahoe 26.2
- System Data consuming storage on Mac and how to clear it
- System Data at 114 GB AFTER deleting other files....
- How to free up System Data space on Mac
Also consider moving large personal files—particularly Photos, videos, music, and other files you control—to an external SSD. This is often a more appropriate way to free internal storage than attempting to delete files that macOS manages as System Data.
Read neuroanatomist's User Tip How to free up ‘System Data’ and other storage on your Mac - Apple Community for a number of suggestions.
Be advised I have had no need for any of the products mentioned, and this is not an endorsement of any of them. I just know it's a common concern typically associated with Macs configured with smaller storage options.
“MacBook Air storage full from large "other" space: My MacBook Air's storage graph shows 68.87GB in the "other" space. It's hogging more than its fair share, leaving me with notices saying my flash drive is nearly full. How can I clean out unnecessary files?”
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Clearing ALL of System Data:
Go Here: How to Use Finder to Clear “System Data" on a Mac - User Tip
Back Up your Mac, as Recommended and Described.
MacBook Air storage full from large "other" space
