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NTBOOT problem using Windows 10 bootmgr to boot VHDs (BSOD 0xc00000bb)

ntboot grub4dos bootmgr

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#1 steve6375

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Posted 25 August 2015 - 06:18 PM

Chenall's NTBOOT is a grub4dos script which modifies a BCD loaded onto a virtual floppy disk.

Using NTBOOT, we can boot from a variety of Windows PE and WindowsToGo VHDs (Win7/8/8.1/10)

It chainloads to bootmgr first and then bootmgr uses the BCD which it has modified so that the path of the VHD file is correct.

 

However, when I tried directly booting a Windows 8 and Windows 10 VHD from an Easy2Boot USB drive which I recently made with my Windows 10 host system, I found that I got a BSOD 0xc00000bb  BCD error from both VHDs, even though the same VHDs worked fine on a different Easy2Boot USB drive that was made using WIn8.1.

 

I traced the problem to the version of bootmgr that I was using. Easy2Boot copies bootmgr from your host system at C:\windows\Boot\PCAT to the Easy2Boot \_ISO\e2b\grub\DPMS\NTBOOT.MOD folder when you run the Make_e2B-USB_Drive.cmd script. The version on my Windows 10 system seems to give this BCD error with NTBOOT. I have found a few different versions of bootmgr and only the Windows 10 C:\windows\Boot\PCAT version seems to give the problem.

 

1. bootmgr 10-07-2015 395268 CRC32=45B6D6D7   - WINDOWS 10 version

2. bootmgr 22-08-2013 427680 CRC32=87783488

3. bootmgr 25-07-2012 398156 CRC32=4B1A74EF

4. bootmgr 14-06-2014 404250 CRC32=CB810D1B

 

Only #1 gives the bad BCD problem with NTBOOT.

 

So it seems that there is something different about the Windows 10 version of bootmgr?



#2 sixcentgeorge

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Posted 27 August 2015 - 07:06 PM

may be read that fix : http://www.microsoft...ror-0xc00000bb/



#3 Wonko the Sane

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Posted 28 August 2015 - 08:34 AM

may be read that fix : http://www.microsoft...ror-0xc00000bb/

Are you serious?  :w00t: :ph34r: :frusty:

 

:duff:

Wonko



#4 sebus

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Posted 10 April 2016 - 07:50 AM

Anybody has full list of different available bootmgr?

 

W10 1511 seems to have:

‎400,228 bytes
30 ‎October ‎2015, ‏‎07:17:25

CRC32: 2139B9DF
MD5: 0DBACCF6F62484244F6A48B7584019A8
SHA-1: 8A7B0B0D7F0DC5F4445DF898A3149477503659AE






Also tagged with one or more of these keywords: ntboot, grub4dos, bootmgr

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