Hi Malik,
Thanks for your post. Please kindly understand that Windows Server 2008R2 has already end of support, we highly recommend you to upgrade the server to the latest version.
Reference: End of support for Windows Server 2008 and Windows Server 2008 R2 | Microsoft Learn
Also, I found some article that might be helpful to you. Just for your reference and hope it is helpful. Solutions to System Image Restore Failed No Disk That Can Be Used (ubackup.com)
Best Regards,
Ian Xue
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