Software⏱️ 4 min read📅 2026-06-11

How to Fix: Virt manager error: unable to find any master var store for loader

Virt manager error unable to find master var store for loader on Fedora 34.

Quick Answer: Check the OVMF_CODE.fd file permissions and ensure it is readable by virt-manager.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🔧 Proven Troubleshooting Steps
  3. 💡 Conclusion

The 'unable to find any master var store for loader' error in Virt Manager occurs when the OVMF_CODE.fd file, which is required for the loader to function properly, cannot be located. This issue affects users who have successfully imported their VMs into Virt Manager but are unable to start them due to this specific error.

This error can be frustrating as it prevents users from accessing their virtual machines, and troubleshooting steps may require some technical expertise. However, by following the steps outlined in this guide, users should be able to resolve this issue and successfully start their VMs.

💡 Why You Are Getting This Error

  • The primary reason for this error is that the OVMF_CODE.fd file has not been properly configured or located within the specified directory. This can occur if the file does not exist in the correct location, or if it has been corrupted during the import process.
  • Another possible cause of this error is a permissions issue with the virt-manager user account. If the user running Virt Manager does not have the necessary permissions to access the OVMF_CODE.fd file, an error will occur.

🔧 Proven Troubleshooting Steps

Correcting the OVMF_CODE.fd file location and configuration

  1. Step 1: Check that the OVMF_CODE.fd file exists in the specified directory (/home/NAME/OSX-KVM/OVMF_CODE.fd) and is not corrupted. If the file does not exist, download it from the GitHub repository again.
  2. Step 2: Verify that the correct permissions are set for the virt-manager user account to access the OVMF_CODE.fd file. This can be done by running the command 'sudo chmod 755 /home/NAME/OSX-KVM/OVMF_CODE.fd' and then trying to start the VM again.
  3. Step 3: If the issue persists, try setting the correct permissions for the virt-manager user account using the 'sudo chown -R virt-manager:virt-manager /home/NAME/OSX-KVM'.

Using an alternative OVMF_CODE.fd file

  1. Step 1: Try using a different version of the OVMF_CODE.fd file. Some users have reported success by using a newer version of the file, which can be downloaded from the GitHub repository.
  2. Step 2: If using a different version of the OVMF_CODE.fd file does not resolve the issue, it may be necessary to try an alternative solution.

💡 Conclusion

To resolve the 'unable to find any master var store for loader' error in Virt Manager, users should first verify that the OVMF_CODE.fd file exists and is properly configured. If this fails, using an alternative version of the file or setting correct permissions may be necessary. By following these steps, users should be able to successfully start their VMs and resolve this issue.

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