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How to modify the path BCD of UEFI Windows

uefi bcd modify bcd

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#1 meoit

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Posted 09 September 2016 - 03:45 AM

Hello all!

I have problem about modifing the path BCD of Windows (UEFI)

Normal, UEFI BCD located in C:\EFI\Microsoft\Boot\BCD
I want to change this path to C:\EFI\MyPath\MyBoot\BCD

Someone help me with Tool !

THANKS ALL.



#2 IAmTheTrueMeaningOfCovfefe

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Posted 09 September 2016 - 04:08 AM

Hmm...........how about with.......oh, I don't know.........BCDEdit?!



#3 Wonko the Sane

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Posted 09 September 2016 - 08:27 AM

NIcely symmetrical with this one:

http://reboot.pro/to...-in-windows-xp/

with the added complication that BOOTMGR, besides checksummed is also compressed.

 

There are several threads about this.

http://reboot.pro/to...usb-sub-folder/

http://reboot.pro/to...ffset-question/

http://reboot.pro/to...r-of-windows-8/

 

There is a nifty program for that in the above thread, here:
http://reboot.pro/to...ows-8/?p=195982

see if it works on UEFI (never tested it, but I believe it is for the BIOS path only, i.e. it edits the BOOTMGR and not the BOOTMGR.EFI, but cannot really say)

 

The (Russian) topic is here:
http://www.usbtor.ru...topic.php?t=562

version 1.34 right now.

 

 

@TheAntiFinder

JFYI BCDEdit edits the BCD, not it's location/path/name, which is hardcoded to \boot\BCD (on BIOS) and \EFI\Microsoft\Boot\BCD (on EFI/UEFI)

 

:duff:

Wonko



#4 meoit

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Posted 10 September 2016 - 02:03 AM

THANKS WONKO!

 

CONTY9 BMPLUS V1.3.4 only can modify LEGACY WinNT6.x LOADERs (as BootMGR), it not support for UEFI.



#5 meoit

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Posted 16 September 2016 - 02:49 AM

Final, I hexed *.efi by using HexEdit. Load very OK. :)







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