Data Backup Problems

How to Use OneDrive to Back Up a Mac Folder Without Syncing

Maira Mehtab Sep 22, 2026 869 views

Question details

The user wants to back up a specific local Mac folder to OneDrive without adding it to the automatic synchronization process or altering how the files are stored locally.

Product: OneDrive
Device & OS: macOS
Scenario: Backing up a large or important folder, such as the Music folder, to the cloud without making it part of the local sync directory.
Observed behavior: Moving folders directly into the OneDrive directory forces two-way synchronization and may offload local files to the cloud via the Files On-Demand feature, which changes how local files are stored.

Before you start

Verify that your OneDrive account has sufficient cloud storage space to accommodate the entire folder, and prepare an external drive if your Mac lacks the local disk space needed to temporarily duplicate the files.

Solution 1Recommended

Use an External Drive and Web Upload for a Standalone Backup

Create a separate backup copy on an external drive and upload it manually via the OneDrive website to bypass the desktop synchronization client entirely.

OneDrive operates primarily as a synchronization service rather than a traditional one-way backup tool. If you move your local folder (such as the Music folder) directly into the Mac's OneDrive directory, it will automatically sync.

Furthermore, OneDrive may utilize the 'Files On-Demand' feature, potentially removing the local copy from your hard drive to save space. To prevent this and preserve your original files, you should create a separate copy of the data.

Connect External Storage

Plug an external hard drive or USB flash drive into your Mac. Ensure it has enough available space to hold the folder you wish to back up.

Copy the Target Folder

Locate the folder on your Mac (e.g., the Music folder). Right-click and select 'Copy', then navigate to your external drive, right-click, and select 'Paste Item' to duplicate the folder.

Upload Manually to OneDrive Web

Open a web browser (like Safari or Chrome) and log in to the official OneDrive website. Drag and drop the duplicated folder from your external drive directly into the browser window to upload it.

Verify the Upload: Always check the OneDrive website to confirm that the upload is fully complete and that the files can be opened or restored before disconnecting your external drive.

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Frequently Asked Questions

Why does OneDrive remove my local files on Mac?

If OneDrive's 'Files On-Demand' feature is active, it automatically offloads older or larger files to the cloud to save local disk space, leaving only a cloud shortcut on your Mac. You must manually mark files as 'Always keep on this device' to prevent this.

Can I set the OneDrive app to only back up and not sync?

No, the default OneDrive desktop application for macOS is designed strictly for two-way synchronization. To achieve a one-way backup, you must bypass the app and manually upload your files via the OneDrive website.

What happens if I just move my Music folder into the local OneDrive folder?

Moving the folder changes its default path on your Mac. Applications that rely on that folder, such as Apple Music, might lose access to your library. Additionally, the files will become subject to OneDrive's automated syncing and Files On-Demand rules.

Migration & Recovery