OneDrive File Issues

How to Keep OneDrive Files Online and Save Local Mac Space

Muhammad Talha Oct 14, 2026 870 views

Question details

The user wants to store OneDrive files online only to save local disk space on a Mac and needs to understand why Finder shows a different storage usage than OneDrive reports.

How to Keep OneDrive Files Online and Save Local Disk Space on Mac

Product: OneDrive
Device & OS: macOS
Scenario: Managing local disk space limits while syncing a large amount of cloud data via OneDrive for Mac.
Observed behavior: Finder reports higher local storage usage for the OneDrive folder than OneDrive itself reports, creating confusion about actual disk space consumption.

Before you start

Ensure your Mac is connected to the internet and that the OneDrive application is running, fully synced, and updated to the latest version before modifying your storage preferences.

Solution 1Recommended

Enable Files On-Demand and Free Up Space

Use this built-in OneDrive feature to ensure files are stored safely in the cloud while consuming zero local disk space until you actually open them.

The Files On-Demand feature is the most effective way to save local disk space on your Mac. When enabled, your files appear in Finder but do not take up actual drive space until they are downloaded for use.

Open OneDrive Preferences

Click the OneDrive cloud icon in your Mac's top menu bar, click the gear icon (Help & Settings), and select 'Preferences'.

Enable Files On-Demand

Navigate to the 'Advanced' or 'Sync and Backup' tab. Find the Files On-Demand section and select the option to 'Download files as you use them'.

Free Up Space in Finder

Open Finder and navigate to your OneDrive folder. Right-click the existing files or folders you no longer need stored locally and select 'Free Up Space'. The files will remain in your cloud storage.

Enable Files On-Demand and Free Up Space

Cloud Icon Indicator: Files successfully moved to online-only will display a small cloud icon next to their name in Finder.

Solution 2

Understand APFS File Cloning Storage Calculations

If you notice duplicate storage usage in Finder, this explains how macOS APFS architecture calculates cloud folder sizes without actually consuming double the physical space.

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Frequently Asked Questions

Will selecting 'Free Up Space' delete my files permanently?

No. Selecting 'Free Up Space' only removes the downloaded local copy from your Mac's hard drive. Your file remains safely backed up in the OneDrive cloud and can be downloaded again at any time.

How do I access an online-only file when I need it?

Simply double-click the online-only file (marked with a cloud icon) in Finder. As long as you have an active internet connection, macOS will instantly download the file and open it.

Why does Finder report different OneDrive storage than the OneDrive app?

Finder calculates the total data size of all files listed in the directory, sometimes double-counting APFS cloned directories. The OneDrive app accurately reports the specific quota utilized on the Microsoft cloud servers.

Document & File Issues