How to Fix an External Hard Drive Not Showing Files on Mac

TL;DR:

Open Finder settings and make sure external disks are displayed, then check Finder > Locations and Disk Utility. If the drive appears in Disk Utility but is not mounted, select it and click Mount. If it mounts but files are missing, check hidden items and permissions. If the drive is RAW, asks to be erased, or contains missing data, recover files before repair or formatting.

1. Check Finder's external-disk display settings.
2. Try another cable, port, power source, or Mac.
3. Check Disk Utility to see whether the drive is mounted.
4. Recover important files before First Aid, erase, or format operations.
5. Stop using a clicking, hot, unstable, or invisible drive.

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When an external hard drive is connected to a Mac but its files do not appear, the drive may be mounted without showing in Finder, hidden by display settings, blocked by permissions, formatted with an unsupported write format, or affected by file-system or hardware problems.

Do not format, erase, initialize, or run First Aid on the drive while important files are missing. First check Finder and Disk Utility to determine whether the Mac can detect the drive. If it is detected, recover or back up important data before attempting repairs.

Note: If the drive is clicking, unusually hot, repeatedly disconnecting, or not detected by any Mac or known-good cable, stop repeated attempts and consider professional data recovery.

This guide explains how to identify the drive state and fix an external hard drive that is not showing files on Mac.

How Does an External Hard Drive Appear on Mac?

After you connect a supported external hard drive, macOS may show it in Finder under Locations and, when enabled, on the desktop. The drive should also appear in Disk Utility, even if its volume is not mounted.

Why Are Files Missing from an External Drive on Mac?

Note: Do not assume that a drive is empty because Finder shows no files. Check Disk Utility and protect the data before formatting.

Choose the Right Next Step Based on What Mac Shows

8 Ways to Fix an External Hard Drive Not Showing Files on Mac

Start with non-destructive checks. If the drive contains important files, recover or back up the data before using First Aid, changing permissions across the disk, or formatting it.

1. Recover or back up visible data.
2. Check Finder display settings.
3. Reconnect the drive and test the cable or port.
4. Show hidden files and folders.
5. Mount the volume in Disk Utility.
6. Check permissions on the required folder.
7. Update macOS or required file-system software.
8. Run First Aid only after data is safe.

Video Tutorial on How to Fix External Hard Drive Not Showing Files on Mac

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Way 1: Recover Files Before Repairing the External Drive

Recoverit Data Recovery can scan an external drive that macOS still detects for deleted, formatted, or inaccessible files. Use it before formatting or repair when important data is missing.

1. Protect the source: Stop copying, deleting, formatting, or repairing the affected drive.
2. Connect the drive: Use a reliable cable, port, power source, and enclosure connection.
3. Select the location: Open Recoverit and choose the external drive shown under available locations.

   

4. Scan the drive: Start the scan and avoid disconnecting the drive while it runs.

   

5. Filter and preview: Search for documents, photos, videos, or other expected file types.

   

6. Recover elsewhere: Save selected files to the Mac's internal drive or another healthy external drive.
7. Verify the result: Open several recovered files before repairing or reformatting the source drive.

Note: Recoverit cannot scan a drive that macOS does not detect or that has a serious physical failure. It cannot guarantee recovery of overwritten data.

Way 2: Reconnect the External Hard Drive and Check Power

1. Safely eject the drive if it appears in Finder.
2. Disconnect the USB or Thunderbolt cable from the Mac and the drive.
3. Inspect the cable and connectors for bent pins, dust, or looseness.
4. Try another compatible cable, Mac port, power adapter, or powered hub.
5. Test the drive on another Mac when available.

If the drive clicks, becomes unusually hot, disconnects repeatedly, or works only when the connector is held at an angle, stop using it. These signs can indicate a cable, enclosure, power, or drive failure.

Way 3: Show Hidden Files and Folders

Use this method when the drive opens normally and storage is occupied, but expected files are not visible. Showing hidden items does not recover files that were deleted.

1. Open the external drive in Finder.
2. Press Command + Shift + . to show or hide hidden files.
3. Inspect the expected folders and copy visible files to another drive.
4. If the drive asks to be formatted or folders remain inaccessible, stop writing and use a recovery path.

Way 4: Mount the External Volume in Disk Utility

1. Open Disk Utility from Applications > Utilities.
2. Choose View > Show All Devices.
3. Select the external volume in the sidebar.
4. Click Mount when the option is available.
5. Open Finder and check whether the files appear.

Note: If Disk Utility reports that the volume is unreadable or asks you to erase it, cancel the prompt and recover data before changing the disk.

Way 5: Check Permissions for the Required Folder

Permission problems usually prevent opening a drive or folder; they do not normally make every file disappear. Change permissions only on the affected folder or volume after important data is backed up.

1. In Finder, select the external drive or affected folder and press Command + I.
2. Expand Sharing & Permissions and unlock the settings with an administrator password if required.
3. Confirm that your account has read access. Add read access only when necessary.
4. Use Apply to enclosed items carefully and only when you understand the scope.
5. Close the window and check the folder again.

Way 6: Update macOS or Required File-System Software

Modern macOS versions manage most USB and Thunderbolt storage without a separate generic hard-drive driver. Update macOS and check the drive manufacturer's software only when the drive requires it.

1. Open Apple menu > System Settings > General > Software Update.
2. Install compatible macOS updates and restart the Mac.
3. If the drive uses NTFS, remember that macOS can usually read NTFS but does not provide native write access. Install a trusted NTFS driver for Mac only when write access is needed.
4. Confirm that any third-party driver supports your macOS version and Apple Silicon or Intel Mac.
5. Reconnect the drive and check Finder and Disk Utility.

Way 7: Restart Your Mac

A restart can reload Finder, USB services, and storage processes after a software or connection glitch.

1. Save work and close open applications.
2. Safely eject the external drive if it is mounted.
3. Choose Apple menu > Restart.
4. Reconnect the drive after macOS starts and check Finder and Disk Utility.

Way 8: Run First Aid Only After Data Is Safe

Disk Utility First Aid can check and repair some logical file-system problems on a detected external drive. It is not a deleted-file recovery tool and may unmount or modify the volume during repair.

Note: Recover or back up important files before running First Aid. Do not use it on a clicking, hot, unstable, or undetected drive.

1. Open Disk Utility and choose View > Show All Devices.

   

2. Select the external volume and click First Aid.
3. Review the warning and choose Run only after data is safe.
4. Wait for the check to finish without disconnecting the drive.
5. Check whether the volume mounts and files appear. If the problem continues, stop repair attempts and seek a recovery path.

Conclusion

An external hard drive may not show files on Mac because of Finder settings, hidden items, an unmounted volume, permissions, an incompatible write format, file-system corruption, connection problems, or physical failure.

Start with non-destructive checks and protect important data. If the Mac detects the drive, recover or back up files before First Aid, erase, or format operations. If the drive is clicking, hot, unstable, or absent from Disk Utility, stop repeated attempts and consider professional recovery.