DD10 and vista 64k cluster size

You guys did a good job in DD10 for converting an XP C: drive
from 4K -> 64K clusters, and cleaned up M$'s boot mess they introduced
at SP1A trying to make XP not boot over 4K clusters (pre SP1a boot
blocks work to boot SP2 and later XP 64k cluster C: drives).

Just playing around, I installed vista RC1 to a scratch drive. Then
ran DD10 from a boot cd to convert to 64K clusters from 4K.
As expected, DD10 "thought" it was XP and overwrote the boot
sectors with what looked to be the XP pre-SP1a boot sectors and
cluster aligned to start at sector 128 instead of 63. Since the
XP boot sectors load NTLDR (vista renamed it to Bootmgr),
this will not work directly. I then used bartPE to copy Bootmgr
into NTLDR, and tried to boot that. Bootmgr started up ok, but
would not load the text file C:\windows\system32\winload.exe,
presumably, Bootmgr has something that "breaks" with 64K
clusters?
Anybody used Grub or other means to start winload.exe on a 64k
cluster system? M$ seems to have gone to lots of trouble
to make XP and vista not boot 64k clusters? runs too fast
for them?
--ghg

 

sorry.. typo

text file C:\windows\system32\winload.exe

should be

next file C:\windows\system32\winload.exe

--ghg