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The bootmgr was deleted on or Dell T310 running Windows Server 2008 as a result of bad partitioning. How can manually I restore the bootmgr?

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If you have the install disc bootrec /fixboot should resolve it –  50-3 Sep 16 '13 at 8:09
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Using a console running from the install CD do as follows:

bootrec /fixboot

This will attempt to rebuild your current bootloader. if it fails, use the steps below.

c:
cd boot
bootsect /nt60 c: /force /mbr
bootrec /rebuildbcd

NOTE: After using the "bootrec /rebuldbcd" command, you will be prompted to accept a Windows installation. Accept the installation, then wait for the process to finish. Once it's done, reboot your computer and you should have a boot loader ready to go.


If rebuilding the mbr and bcd still does not work

A startup repair is likely needed to be done. Follow the steps below to perform a startup repair.

  1. Insert the Windows 2008 installation CD/DVD into the recovered system's DVD-ROM and restart the system.

  2. Select to boot from the Windows installation CD/DVD when prompted.

  3. From the menu options displayed, choose the repair option and then open a command prompt option.

  4. At the command prompt, type the following commands pressing the Enter key after each line:
cd recovery
run startrep.exe

full credits

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Thank you for the definitive response, the install disk boots me directly into the Windows server installation options. This could be as a result of the partition being deleted. –  xdrone Sep 16 '13 at 9:04
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