06:33
Cause and Fix
The
most likely cause of this error is that you tried to dual boot two operating
systems and then later decided to remove one. This inadvertently may have
deleted the bcd boot store. The trick here is to run the above commands in the
right order and set your boot partition to active. Let’s get started.
Make sure your boot partition is set to
Active
Boot
from your DVD and choose the repair option. From the recovery console type
“diskpart” and press enter and then type “list disk” to get a list of physical
disks installed.
In the example here I
only have one disk in my machine, if you have more than one identify the disk
which has the Windows boot partition on it and then select it. Select it by
typing “select disk 0” (in my case). Now type “list partition”. The
Windows 7 boot partition is a 200 MB primary partition. As you can see here it
was on disk 0. Select it by typing “select partition 2” or whichever number
matches your 200MB partition.
Now type “detail
partition” and look where it says “Active”. If it says yes then move onto the
next section otherwise type “Active” and press enter, Windows should report the
partition is now marked as active. Now reboot and boot into the recovery
console again.
Repair the MBR and boot sectors
From
the recovery console run these commands in this order:
§
bootrec /fixmbr
§
bootrec /fixboot
Now reboot the machine again into the
recovery console and type “bcdboot path to
your windows folder“. Your windows folder will normally be c:\windows
but in the recovery console it may show up as D:\windows so make sure you get
the path right. In my case it was “bcdboot d:\windows”. This will will build a
new bcd boot store and copy over all boot files needed to boot. Now reboot your
machine one last time and it should work. If it doesn’t run the two bootrec
commands again.
If
you have any additional operating systems you want to add use the bootrec
/scanos command.
