<br><br>---------- Forwarded message ----------<br>From: <b>Jeremy Mlazovsky</b> <<a href="mailto:mlazovjp@gmail.com">mlazovjp@gmail.com</a>><br>Date: Saturday, March 26, 2016<br>Subject: [ipxe-devel] WinPE behaves differently when started by wimboot<br>To: Christian Nilsson <<a href="mailto:nikize@gmail.com">nikize@gmail.com</a>><br><br><br>As soon as you mentioned the difference in screen resolution, the first thing that came to mind was that the Surface Pro 3 sounded like it was booting into BIOS / Legacy Mode rather than UEFI. But this link says that it uses UEFI. However, the Surface Pro 4 uses a different type of UEFI. Maybe that has something to do with it?<div><br></div><div><span></span><a href="https://www.microsoft.com/surface/en-us/support/warranty-service-and-recovery/how-to-use-the-bios-uefi?os=windows-10" target="_blank">https://www.microsoft.com/surface/en-us/support/warranty-service-and-recovery/how-to-use-the-bios-uefi?os=windows-10</a><br><br>On Saturday, March 26, 2016, Christian Nilsson <<a href="javascript:_e(%7B%7D,'cvml','nikize@gmail.com');" target="_blank">nikize@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Andres,<br>
<br>
On Tue, Mar 22, 2016 at 5:25 PM, Andres, Roman <<a>Roman.Andres@netree.ch</a>> wrote:<br>
> Hi!<br>
><br>
><br>
><br>
> I have a question regarding wimboot. I don’t know if it is a wimboot issue<br>
> or not and couldn’t find anyone with a similar issue. I noticed that WinPE<br>
> behaves differently (hardware/driver detection) when it was started by<br>
> wimboot than when I boot it from a Windows Deployment Server or from a local<br>
> volume.<br>
><br>
><br>
><br>
> · Network Adapter detection<br>
><br>
> o Hardware: Surface Pro 4 with the Surface Gigabit Ethernet Adapter (same<br>
> adapter as the Surface Pro 3 uses)<br>
><br>
> o WinPE is booted with iPXE/wimboot: Network Adapter is not detected. When<br>
> unplugging it and plugging it back in, WinPE will detect the Network Adapter<br>
> and it gets an IP configuration from the DHCP server.<br>
><br>
> o Same WinPE is booted from WDS Server or from a local volume: Network<br>
> Adapter is immediately detected and gets an IP configuration from the DHCP<br>
> server.<br>
><br>
> o Note: This does not happen on the Surface Pro 3 with the same Network<br>
> Adapter. The adapter gets detected even when booted with iPXE/wimboot.<br>
><br>
<br>
There is a few possible reasons, boot.wim differences or selected<br>
index is the first one, BCD is another, there is also boot.sdi but<br>
unlikely, and then there is cached dhcp packets or similar that's<br>
might be push thru with WDS but not with local boot. is wimboot always<br>
booted in EFI or Legacy mode, and is the other boot variants stared in<br>
the same mode?<br>
<br>
After a wpeinit everything should work, maybe it's just a timing issue?<br>
<br>
<br>
> · Screen Resolution (not really an issue, just thought I’d mention<br>
> it)<br>
><br>
> o Hardware: Surface Pro 3<br>
><br>
> o WinPE is booted with iPXE/wimboot: Screen resolution is low (1024x768 I<br>
> think).<br>
><br>
> o Same WinPE is booted from a local volume: Screen resolution is as high<br>
> as it should be.<br>
><br>
><br>
<br>
Have you added The gui parameter to wimboot (also see above about efi/legacy)<br>
<br>
/Christian<br>
<br>
><br>
> I used the latest wimboot release 2.5.2. I also edited the BCD to look the<br>
> same as the BCD when I boot the WinPE from a local volume and used the<br>
> rawbcd parameter for wimboot to make sure it won’t modify it. The behavior<br>
> stays the same.<br>
><br>
><br>
><br>
> Kind regards,<br>
><br>
> Roman Andres<br>
><br>
><br>
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</blockquote></div>
<br>