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Win7 Rebuild BCD


Failure to boot triggers Startup Repair - OS not found


When Windows 7 and later fail to boot, it may be necessary to rebuild the BCD files and structure.  From a recovery console CLI.


Due to the low level nature of this repair, it is strongly recommended that a disk image (backup) is taken before commencement.


1. Backup the existing BCD

Bootrec.exe bcdedit /export C:\BCD_Backup


2. Unhide and disable the existing BCD

cd \boot

attrib bcd -s -h -r

ren c:\boot\bcd bcd.old


3. Rebuild the BCD

bootrec /RebuildBcd

bootrec /fixmbr

bootrec /fixboot


4. Optional.  The partition can be marked active, if needed, using the diskpart utility


list disk

select disk 0

list paritition

Warning! Beware of recovery partitions

select partition 1





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Article details
Article ID: 75
Category: Windows
Date added: 05-12-2015 03:58:07
Views: 209
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