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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi Ian, Michael,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I tried the same hardware with wimboot 1.0.5. But I don’t see any error message on screen. The same old blank screen
</span><span style="font-size:11.0pt;font-family:Wingdings;color:#1F497D">L</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Amit<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Ian Bannerman [mailto:ian@internals.io]
<br>
<b>Sent:</b> Tuesday, May 20, 2014 12:39 PM<br>
<b>To:</b> Michael Brown; Amit Shah; Hummel Frank; ipxe-devel@lists.ipxe.org<br>
<b>Subject:</b> RE: [ipxe-devel] wimboot issue with server 2012 on physical servers<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">On Sat, 17 May 2014 23:01:13 +0100 Michael Brown wrote:<br>
> > On 15/05/14 15:12, Amit Shah wrote:<br>
> >> I had contacted you regarding an iPXE issue with Windows 8 (below). I<br>
> >> see a lot more people complain about this. There is a tool called Razor<br>
> >> by puppet labs. This uses iPXE and people trying this out are facing<br>
> >> this issue.<br>
> >><br>
> >> Is there any way to escalate this ? Is it possible for you guys to take<br>
> >> another look into this and find a possible solution.<br>
> ><br>
> > I had a thought about this the other day.<br>
> ><br>
> > The blank screen problem derives from a bug in bootmgr.exe: it will<br>
> > switch to graphical mode as soon as it determines that it can drive the<br>
> > VESA framebuffer display. If it later finds that it doesn't have the<br>
> > fonts to display an error message, it will revert to plain text output.<br>
> > However, it _fails_ to reconfigure the display for text output, with<br>
> > the result that the output is invisible.<br>
> ><br>
> > It occurred to me that there is a workaround for this. All real-mode<br>
> > calls made by bootmgr.exe go through wimboot (which is how wimboot works<br>
> > in the first place; it intercepts INT 13 and emulates a FAT32 disk). We<br>
> > could intercept the VESA BIOS calls and pretend that the system does not<br>
> > have a VESA framebuffer. This should cause bootmgr.exe to remain in<br>
> > text mode, which would then ensure that error messages would be visible<br>
> > without requiring any font files.<br>
> <br>
> I have implemented this in the latest version of wimboot (v1.0.5). I <br>
> have verified that an error messages which would previously be invisible <br>
> due to missing fonts is now displayed in text mode.<br>
> <br>
> Please retry with wimboot version 1.0.5.<br>
> <br>
> Michael<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">Wow! That's pretty epic, great job on that Michael! Amit, I hope you can give this a go and we can see a proper error.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">--Ian<o:p></o:p></span></p>
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