[ipxe-devel] wimboot issue with server 2012 on physical servers

Wed Apr 30 15:38:30 UTC 2014

Blank screen is mostly caused by an error occurring during the boot of your wim file while the fonts to display the error messages are missing.

If your build system created a ISO file you extracted the wim file from you can check if this is the cause for the blank screen.

1.     Boot your server using a CD/DVD created with that very ISO and see, if this works.

2.     If yes - check the folder "Boot\Fonts" on that CD/DVD. You will see the necessary fonts in there. Normally you don't need the Japanese and Korean fonts. Then load the necessary fonts via iPXE and see if you get a readable error message. You can reduce the maximum set of fonts then to the necessary minimum and try to resolve the causing error after that.

mit freundlichen Grüßen
with kind regards

i. A. Dipl.Ing. (FH) Frank Hummel
Systementwicklung
System development

Von: ipxe-devel-bounces at lists.ipxe.org [mailto:ipxe-devel-bounces at lists.ipxe.org] Im Auftrag von Amit Shah
Gesendet: Mittwoch, 30. April 2014 16:36
An: Ian Bannerman; ipxe-devel at lists.ipxe.org
Betreff: Re: [ipxe-devel] wimboot issue with server 2012 on physical servers

Hi Ian,

I changed the bcd file. But I see exact same behavior. After loading all files I see the windows "Loading files" scroolbar and then a blank screen. 

Thanks

Amit 

From: Ian Bannerman [mailto:ian at internals.io] 
Sent: Tuesday, April 29, 2014 11:02 PM
To: Amit Shah; ipxe-devel at lists.ipxe.org
Subject: RE: [ipxe-devel] wimboot issue with server 2012 on physical servers

Ok, so what we know so far is the boot process has done this in terms of execution flow:

Power On -> BIOS -> iPXE -> wimboot -> bootmgr.

Somewhere at/after bootmgr things are failing. Now this could be because of issues with iPXE, wimboot, the BIOS, or something else, but at least we know bootmgr or something later in the boot process are executing when things break.

If you have a functional Windows 8/Server 2012 or newer machine, you can copy your BCD file over to it, open a command prompt, and run the bcdedit command: bcdedit /store <path to your bcd file> /set {default} bootmenupolicy legacy

Bcdedit will modify the BCD file to use the legacy boot menu policy, which for our purposes will change the visual boot flow to go from iPXE/wimboot -> two progress loading bars -> the Windows logo, and further narrow down where things go wrong.

If you don't have a Windows machine you can use, for this test you can also try using this BCD file I've applied the setting to: https://onedrive.live.com/redir?resid=1F9FB6FE110265E6!2126&authkey=!AN_v1cLMXND2bVM&ithint=file%2c

Let us know what you see on boot as a result of trying this change!

--Ian

________________________________

From: amit.shah at citrix.com
To: ian at internals.io; ipxe-devel at lists.ipxe.org
Subject: RE: [ipxe-devel] wimboot issue with server 2012 on physical servers
Date: Wed, 30 Apr 2014 02:53:01 +0000

Hi Ian,

I have tried on a couple of physical servers (same types) and see same issue.

After commenting initrd for BCD I do see an error screen (Recovery screen complaining about missing BCD).

I am not sure how do I run bcdedit without OS being loaded. Can you explain ? 

Thanks a lot for your help.

Amit 

From: Ian Bannerman [mailto:ian at internals.io] 
Sent: Tuesday, April 29, 2014 10:14 PM
To: Amit Shah; ipxe-devel at lists.ipxe.org
Subject: RE: [ipxe-devel] wimboot issue with server 2012 on physical servers

Does the problem only happen on that machine, or do other, different, physical machines have the same problem? 

Also, let's try to narrow down where things are going wrong. If you comment out the initrd for the BCD, do you see an error after everything is downloaded? If so, we know we're making it that far.

If so, can you use bcdedit to enable the legacy menu: bcdedit /store <path to your bcd file> /set {default} bootmenupolicy legacy

That will cause a few loading bars before you should see the Windows logo (which we're not reaching). What do you see in this case?

--Ian

________________________________

From: amit.shah at citrix.com
To: ian at internals.io; ipxe-devel at lists.ipxe.org
Subject: RE: [ipxe-devel] wimboot issue with server 2012 on physical servers
Date: Wed, 30 Apr 2014 01:25:58 +0000

Hi Ian,

The new wimboot did solve the issue with Server 2012 R2 of "bootmgr.exe not found". But even in this case I am left with a blank screen after all files finish loading. Also to re-iterate the same script works on a VM on xen but gives a blank screen on a physical server.

Thanks

Amit 

From: Ian Bannerman [mailto:ian at internals.io] 
Sent: Tuesday, April 29, 2014 8:56 PM
To: Amit Shah; ipxe-devel at lists.ipxe.org
Subject: RE: [ipxe-devel] wimboot issue with server 2012 on physical servers

Ok, great. This should be pretty straightforward then. There were some changes to how bootmgr.exe was stored in bootmgr and wimboot was recently updated to support this. Can you grab the latest version from here and see if it resolves your issue - https://git.ipxe.org/releases/wimboot/wimboot-latest.zip ?

If that does not work, please try directly using bootmgr.exe (thus avoiding wimboot extracting it) by grabbing the file from inside the winpe.wim file at Windows\Boot\PXE\bootmgr.exe

--Ian

________________________________

From: amit.shah at citrix.com
To: ian at internals.io; ipxe-devel at lists.ipxe.org
Subject: RE: [ipxe-devel] wimboot issue with server 2012 on physical servers
Date: Wed, 30 Apr 2014 00:51:59 +0000

Server 2012. This is the script

#!ipxe

echo ======================================================================

echo freeing all loaded images to ensure wimboot works

imgfree

echo ======================================================================

set base <%= repo_url.sub(%r{/$}, '') %>

kernel <%= file_url('wimboot', true) %>

initrd ${base}/bootmgr                          bootmgr

initrd ${base}/boot/bcd                         BCD

initrd ${base}/boot/fonts/segmono_boot.ttf      segmono_boot.ttf

initrd ${base}/boot/fonts/segoe_slboot.ttf      segoe_slboot.ttf

initrd ${base}/boot/fonts/segoen_slboot.ttf     segoen_slboot.ttf

initrd ${base}/boot/fonts/wgl4_boot.ttf         wgl4_boot.ttf

initrd ${base}/boot/boot.sdi                    boot.sdi

initrd ${base}/winpe.wim                        boot.wim

echo ======================================================================

imgstat

echo now booting WinPE client

boot

Server 2012 R2 doesn't work atall. I get an bootmgr.exe not found error. Is there any fix available for this ?

Thanks

Amit

From: Ian Bannerman [mailto:ian at internals.io] 
Sent: Tuesday, April 29, 2014 8:22 PM
To: Amit Shah; ipxe-devel at lists.ipxe.org
Subject: RE: [ipxe-devel] wimboot issue with server 2012 on physical servers

Server 2012 or Server 2012 R2? Can you please share the wimboot portion of your ipxe script?

Thanks!

--Ian

________________________________

From: amit.shah at citrix.com
To: ipxe-devel at lists.ipxe.org
Date: Tue, 29 Apr 2014 21:01:25 +0000
Subject: [ipxe-devel] wimboot issue with server 2012 on physical servers

Hi,

I am trying to install Windows Server 2012 on physical servers. Followed the instructions here http://ipxe.org/wimboot. After loading all the files I see a blank screen. I found several posts with this issue but with no definitive solution. 

http://forum.ipxe.org/showthread.php?tid=7085

http://forum.ipxe.org/showthread.php?tid=7121

http://lists.ipxe.org/pipermail/ipxe-devel/2013-January/002176.html

I added the missing font, made sure the bios is at latest, etc.

The same task works fine on a VM hosted on Xen but doesn't work on a physical servers. These are some hardware details

"bios_vendor":"HP",

"bios_version":"P58",

"bios_release_date":"05/02/2011",

"manufacturer":"HP",

"productname":"ProLiant DL360 G5",

"serialnumber":"USE839N9CA",

"uuid":"33393935-3234-5553-4538-33394E394341",

"type":"Rack Mount Chassis"

Are there any know issues ? Any help is appreciated.

Thanks

Amit  

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