How do I fix: 🔍 Why This Happens?

The primary reason for this error is due to the lack of proper permissions on the user's account. The 'Access external storage devices automatically' option may not be enabled, preventing the system from recognizing the USB drive.Another possible cause could be a misconfigured user group or profile

How do I fix: Using the 'udisks' Command?

Step 1: Open a terminal window as the root user (using 'sudo' command) and navigate to the directory containing the USB drive.Step 2: Use the 'udisks' command with the '--mount' option to mount the device, for example: udisks --mount /dev/sdb1Step 3: If successful, verify that the partitions are vis

Software⏱️ 3 min read📅 2026-06-11

How to Fix: Ubuntu error Cannot mount USB drive Not Authorized

Q: Best Solutions to Fix It Enabling User Privileges for External Storage?

Step 1: Open the 'User and Groups' settings by navigating to Administration > User and Groups.Step 2: Click on the 'Properties' tab related to the user account in question.Step 3: Look for the 'Access external storage devices automatically' option and ensure it is checked.Step 4: If the option is no

Ubuntu error Cannot mount USB drive Not Authorized

Quick Answer: Check user permissions and ensure the user account has access to external storage devices automatically.

📋 Table of Contents

🔍 Why This Happens
✅ Best Solutions to Fix It
✨ Wrapping Up

This error occurs when an external USB drive cannot be mounted due to lack of authorization, affecting users of Ubuntu 11.10 Desktop.

The frustration lies in the fact that the user can see the USB symbols in the Unity Launcher bar but is unable to access them, leading to a poor user experience.

🔍 Why This Happens

The primary reason for this error is due to the lack of proper permissions on the user's account. The 'Access external storage devices automatically' option may not be enabled, preventing the system from recognizing the USB drive.
Another possible cause could be a misconfigured user group or profile that restricts access to external storage devices.

✅ Best Solutions to Fix It

Enabling User Privileges for External Storage

Step 1: Open the 'User and Groups' settings by navigating to Administration > User and Groups.
Step 2: Click on the 'Properties' tab related to the user account in question.
Step 3: Look for the 'Access external storage devices automatically' option and ensure it is checked.
Step 4: If the option is not available, consider adjusting the user's group membership or profile settings to grant access to external storage devices.

Using the 'udisks' Command

Step 1: Open a terminal window as the root user (using 'sudo' command) and navigate to the directory containing the USB drive.
Step 2: Use the 'udisks' command with the '--mount' option to mount the device, for example: udisks --mount /dev/sdb1
Step 3: If successful, verify that the partitions are visible by running the 'df' command.

✨ Wrapping Up

To resolve this issue, enable user privileges for external storage devices or use the 'udisks' command to mount the device directly. If the problem persists, consider adjusting user group membership or profile settings to grant access to external storage devices.

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