Error message when you use the Wbadmin.exe command-line tool to recover an EFI volume on a Windows Server 2008-based computer: "Online recovery of EFI System Partition is not supported. Please try recovering from Windows Recovery Environment"

You use the Wbadmin.exe command-line tool to recover an Extensible Firmware Interface (EFI) volume on a Windows Server 2008-based computer. However, you receive the following error message:

This issue occurs because recovery of an EFI volume either as a volume or as a file is not supported in an online operating system (OS). However, recovery of an EFI volume either as a volume or as a file is supported in an offline Windows Recovery Environment (WinRE) by using the volume recovery command.

1. Insert the Windows Server 2008 installation DVD into the DVD drive, and then restart the computer.
2. Select the following options, and then click Next:
   • Installation language
   • Time and currency format
   • Keyboard layout
3. Click Repair your computer.
4. In the System Recovery Options dialog box, click the operating system that you want to repair, and then click Next.
5. Under Choose a recovery tool, click Command Prompt.
6. At the command prompt, type the following command, and then press ENTER:
   wbadmin start recovery -version:version identifier -itemType:Volume -items:volume drive letter -backuptarget:volume that hosts the back up -machine:Servername -recoverytarget:volume drive letter
   
   For example, this command may resemble the following:
   wbadmin start recovery -version: 5/20/2010-17:51 -itemType:Volume -items:\\?\Volume{b22896db-2334-11df-b1a5-806e6f6e6963 }\ -backuptarget:F: -machine:2K8SRV �recoverytarget:C:
7. Type exit, and then press ENTER to close the Command Prompt window.
8. In the System Recovery Options dialog box, click Restart to restart the computer.

For more information about the Wbadmin command, visit the following Microsoft Web site: