[ipxe-devel] WinPE 5.0 wimboot errors?

[Brian Rak]

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.