Does Windbg connection Possible during OS Installation?

NTDEV
1

The thing I am trying is Installing Win 2008 R2 OS in the LUN. To access LUN we have an xxxhba.sys driver.
xxxhba.sys driver is signed using sha2 algorithm. Since Win 2008 R2 doesn’t support sha2, KB3033929 update is needed.

Using DISM tool added KB3033929 and xxxhba.sys driver to boot.wim and install.wim file and made it as ISO.
Now when I am doing OS installation on the LUN “windows loading screen” is seen indefinitely.

I have to figure out what went wrong, so please someone answer the following question…

  1. Can I connect windbg to a machine where OS installation is in progress? If so please suggest the steps.
  2. In a perfectly working case, xxxhba.sys (bootstart driver) during OS installation it will load and identifies the LUN, therefore OS installation can be carried out.

But this is not happening. xxxhba.sys signed using sha-1 gets succeeded in identifying LUN. xxxhba.sys signed using sha-2 gets failed. If signature is an issue, Tried ABO (Advanced Boot Options) Disable driver signature enforcement. This must skip signature issues inspite of sha-2 signed and must load xxxhba.sys, why this is not happening?

  1. Can I set ?Disable driver signature enforcement? option in OS offline image itself? Do some tool like that is there?
  2. Using DISM it’s possible to add drivers and updates to an OS offline image, likewise anyway possible to edit BCD, registry?
  3. Do able to ‘set TESTSIGNING ON’ to an os offline image?
  4. Does Microsoft provides windows 2008 R2 OS with all KB updates included in an ISO image dvd to a customer if requested?

Thanks in Advance,
Ananth

2

Yes you can run Windbg during the install see
https://technet.microsoft.com/en-us/library/cc766446(v=ws.10).aspx?f=255
&MSPPError=-2147217396

You may be able to apply KB3033929 by making a new image with the WAIK see
https://www.microsoft.com/en-us/download/details.aspx?id=5753

Don Burn
Windows Driver Consulting
Website: http://www.windrvr.com

-----Original Message-----
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To: Windows System Software Devs Interest List
Subject: [ntdev] Does Windbg connection Possible during OS Installation?

The thing I am trying is Installing Win 2008 R2 OS in the LUN. To access LUN
we have an xxxhba.sys driver.
xxxhba.sys driver is signed using sha2 algorithm. Since Win 2008 R2 doesn’t
support sha2, KB3033929 update is needed.

Using DISM tool added KB3033929 and xxxhba.sys driver to boot.wim and
install.wim file and made it as ISO.
Now when I am doing OS installation on the LUN “windows loading screen” is
seen indefinitely.

I have to figure out what went wrong, so please someone answer the following
question…

  1. Can I connect windbg to a machine where OS installation is in progress?
    If so please suggest the steps.
  2. In a perfectly working case, xxxhba.sys (bootstart driver) during OS
    installation it will load and identifies the LUN, therefore OS installation
    can be carried out.

But this is not happening. xxxhba.sys signed using sha-1 gets succeeded in
identifying LUN. xxxhba.sys signed using sha-2 gets failed. If signature is
an issue, Tried ABO (Advanced Boot Options) Disable driver signature
enforcement. This must skip signature issues inspite of sha-2 signed and
must load xxxhba.sys, why this is not happening?

  1. Can I set ?Disable driver signature enforcement? option in OS offline
    image itself? Do some tool like that is there?
  2. Using DISM it’s possible to add drivers and updates to an OS offline
    image, likewise anyway possible to edit BCD, registry?
  3. Do able to ‘set TESTSIGNING ON’ to an os offline image?
  4. Does Microsoft provides windows 2008 R2 OS with all KB updates included
    in an ISO image dvd to a customer if requested?

Thanks in Advance,
Ananth

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3

Hi Don Burn, thanks for the reply.