DOK USB Boot -> 7B Error

Hi,



I'm pretty new to XPe so maybe all things I'm going to say may not be
totally exact.



Here are the facts:



My XPe boots ok on HDD IDE and on CF with IDE adapter home mounted.



I have a DOK that didn't want to boot for a long long time until I found
this solution:



- Configure an ASUS P5AD2 with USB that force emulation of the
USB DOK as a Local HDD (that's a magic function on AMI boards?!)

- Boot on a Win98 SE BootDisk

- The DOK is detected as a C: drive visible from dos as an IDE
disk

- I fdisk/format the key using Win98 format.com/fdisk.exe (I
had to remove all my IDE drive to activate that partition for note)

- I used BOOTPREP.EXE from DOS that works then perfectly (many
try without doing this was not working)

- After all those .. Magic . when I put USB-HDD in any BIOS on
any computer the key said : NTLDR Missing .



Ok so the BIOS try to read NTLDR on the USB Key



Next I use TD to Build the Configuration on the USB Key then Reboot and
... 7B ERROR !



I think that the boot phase is unable to read on USB.. I saw many posts
about pushing the usb at boot phase but didn't really understand it.
Also I would like to modify the registry on the USB key without building
all the config again is it possible?



Any information would be a great help.



Many thanks in advance



Christophe