Software⏱️ 4 min read📅 2026-06-15

How to Fix: "No unmounted partitions found" error while restoring Clonezilla backup to VirtualBox VM

Error while restoring Clonezilla backup to VirtualBox VM

Quick Answer: Check if the USB drive is properly connected and recognized by VirtualBox, as the issue might be due to a faulty or unrecognized storage device.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. 🚀 How to Resolve This Issue
  3. ✨ Wrapping Up

The 'No unmounted partitions found' error occurs when Clonezilla is unable to locate any mounted partitions during the restoration process. This issue primarily affects users who are attempting to restore a Clonezilla backup to a VirtualBox VM, similar to your situation with reinstalling XP on an old notebook.

This error can be frustrating as it prevents you from successfully restoring your system and may require additional troubleshooting steps. However, by following the steps outlined below, you should be able to resolve this issue and successfully restore your Clonezilla backup.

⚠️ Common Causes

  • The primary cause of this error is that VirtualBox VMs do not support mounting external USB drives or partitions directly. When you boot the Clonezilla Live CD, it attempts to mount the USB drive containing your Clonezilla image, but since the VM does not have a physical connection to the drive, the mount operation fails, resulting in the 'No unmounted partitions found' error.
  • An alternative reason for this error could be that the VirtualBox VM's storage controller is not properly configured or recognized by Clonezilla. This may occur if the VM's storage controller is set to use a different type of storage (e.g., IDE) than what was used during the original imaging process.

🚀 How to Resolve This Issue

Mounting the USB Drive using VirtualBox's built-in storage controller

  1. Step 1: Insert the USB drive containing your Clonezilla image into a port on your host machine.
  2. Step 2: Open VirtualBox and select the VM that you want to restore to. In the 'Storage Controller' settings, ensure that the 'IDE Controller' is selected as the primary controller. Then, create a new storage controller by clicking on the '+' button and selecting 'IDE'. Assign the USB drive to this new IDE controller.
  3. Step 3: Restart VirtualBox and boot into the Clonezilla Live CD. When prompted, select the correct storage device (in this case, the newly created IDE controller).

Using a third-party tool to mount the USB Drive

  1. Step 1: Download and install a third-party tool such as 'VirtualBox USB Controller' or 'USB Mounter'. These tools allow you to mount external USB drives within VirtualBox.
  2. Step 2: Insert the USB drive containing your Clonezilla image into a port on your host machine. Open VirtualBox and select the VM that you want to restore to. Use the third-party tool to mount the USB drive to a virtual IDE controller within the VM.

✨ Wrapping Up

By following one of the methods outlined above, you should be able to resolve the 'No unmounted partitions found' error and successfully restore your Clonezilla backup to the VirtualBox VM. If you are still experiencing issues, it may be helpful to consult the documentation for both Clonezilla and VirtualBox for further troubleshooting guidance.

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