windows - How to set boot disk flag with diskpart

My Windows Server 2008 R2 won't start and stops with Stop 7B, so I start the recovery console and use diskpart to check the disk. There are to partitions one of Type 17 and one of type 07, the detail disk command show me that the disk is not a boot disk. How can I set this boot flag with diskpart? Or is this flag only set true if the MBR works fine. I try following commands:

bootsect /nt60 ALL /force /mbr
bootrec /fixboot
bootrec /fixmbr
bootrec /rebuildbcd

the last command show me the number of OS is 0, so how can I set this flag to true?

Here is the output of diskpart detail disk: enter image description here

Answer

The diskpart in recovery console doesn't allow you to make a partition active(bootable).

Use Gparted Live.

http://en.wikipedia.org/wiki/Diskpart "On the Recovery Console, which is included in all Windows 2000, Windows XP and Windows Server 2003, there is a diskpart command which is significantly different from the one included in the actual operating system. It only provides functionality for adding and deleting partitions, but not for setting an active partition. The utility is also provided in the Windows Recovery Environment, the successor of the original Recovery Console"

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