What should you do?

You have a test server named Server1 that is configured to dual-boot between Windows Server 2008 R2 and Windows Server 2012 R2. You start Server1 and you discover that the boot entry for Windows Server 2008 R2 no longer appears on the boot menu.
You start Windows Server 2012 R2 on Server1 and you discover the disk configurations shown in the following table.

You need to restore the Windows Server 2008 R2 boot entry on Server1. What should you do?
A. Run bcdedit.exe and specify the /createstore parameter
B. Run bootrec.exe and specify the /scanos parameter
C. Run bcdboot.exe d:windows.
D. Run bootrec.exe and specify the /rebuildbcd parameter

Correct Answer: D
Explanation/Reference:
A)
BCDEdit is a command-line tool for managing BCD stores.
It can be used for a variety of purposes, including creating new stores, modifying existing stores, adding boot menu options, /Createstore Creates a new empty boot configuration data store.
The created store is not a system store.
B)
Bootrec.exe tool to troubleshoot “Bootmgr Is Missing” issue.
The /ScanOs option scans all disks for installations that are c mpatible with Windows Vista or Windows 7.
Additionally, this option displays the entries that are currently not in the BCD store. Use this option when there are Windows Vista or Windows 7 installations that the Boot Manager menu does not list.
C)
D)
Bootrec.exe tool to troubleshoot “Bootmgr Is Missing” issue. The /ScanOs option scans all disks for installations that are compatible with Windows Vista or Windows 7. Additionally, this option displays the entries that are currently not in the BCD store. Use this option when there are Windows Vista or Windows 7 installations that the Boot Manager menu does not list.
http://technet.microsoft.com/en-us/library/cc709667(v=ws.10).aspx
http://support.microsoft.com/kb/927392/en-us