[ipxe-devel] WinPE 5.0 wimboot errors?

[Brian Rak]

Not a bad idea, while it gets me past the bootmgr issue, the OS still 
doesn't boot correctly.  I'm seeing the same error as this forum post: 
http://forum.ipxe.org/showthread.php?tid=6967

I'm not entirely certain if this is an issue with iPXE or not.  I'm not 
really sure how I could tell either.

On 10/10/2013 8:21 PM, Andrew Bobulsky wrote:
> On Oct 10, 2013, at 5:48 PM, Brian Rak <brak at gameservers.com> wrote:
>
>> I'm attempting to boot a WinPE 5.0 image (from the ADK for Windows 8.1 preview: http://www.microsoft.com/en-us/download/details.aspx?id=39306 ), and I'm running into some issues.  It seems that wimboot is no longer able to load bootmgr.exe:
>>
>> https://dl.dropboxusercontent.com/u/2078961/wimboot.png
>>
>> If I compare the old wimboot file (from WinPE 4.0) to the new one, what I'm assuming to bootmgr.exe seems to be in the same place:
>>
>> 00006880  53 20 20 20 25 78 0a 00  4c 64 74 20 20 25 78 0a  |S %x..Ldt  %x.|
>> 00006890  00 00 00 00 00 00 00 07  25 6c 78 0a 00 00 00 00 |........%lx.....|
>> 000068a0  42 4d 58 48 1c f6 05 00  08 a3 0a 00 10 20 00 00 |BMXH......... ..|
>> 000068b0  4d 5a 90 00 03 00 00 00  04 00 00 00 ff ff 00 00 |MZ..............|
>> 000068c0  b8 00 00 00 00 00 00 00  40 00 00 00 00 00 00 00 |........ at .......|
>> 000068d0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 |................|
>> 000068e0  00 00 00 00 00 00 00 00  00 00 00 00 e8 00 00 00 |................|
>> 000068f0  0e 1f ba 0e 00 b4 09 cd  21 b8 01 4c cd 21 54 68 |........!..L.!Th|
>> 00006900  69 73 20 70 72 6f 67 72  61 6d 20 63 61 6e 6e 6f  |is program canno|
>> 00006910  74 20 62 65 20 72 75 6e  20 69 6e 20 44 4f 53 20  |t be run in DOS |
>> 00006920  6d 6f 64 65 2e 0d 0d 0a  24 00 00 00 00 00 00 00 |mode....$.......|
>>
>>
>> I'm not certain what the error messages mean, has the bootmgr format changed significantly?
>>
>> WinPE 5.0 apparently fixes a terrible bug in WinPE 4 ( http://support.microsoft.com/kb/2853726 ), so I was hoping to be able to use it even though it's not officially released.
> Hello Brian,
>
> After eyeballing both your screenshot and the Microsoft KB, there's no
> specific mention of anything bootmgr related... Can you just extract
> the bootmgr from a WinPE 4 ISO and use that instead?
>
> Bootmgr--much to our chagrin--hasn't exactly changed a whole lot in
> the last six years... The one included in WinPE 4 should likely work
> for booting WinPE 5.
>
> Should!  :)
>
> Cheers,
> Andrew Bobulsky