http://www.konfabulieren.com/2006/03/22/bart-pe-xp-mit-software-raid-support/
http://www.mefeedia.com/entry/setup-raid1-on-windows-xp-professional/5837250/

make temporary folder

expand dmadmin.ex_
expand dmconfig.dl_
expand dmboot.sy_

or copy from C:\windows\system32 to temporary folder

use hex editor 



  dmboot.sys:
  before:
  0000f1f0h: 74 00 54 00 79 00 70 00 65 00 00 00 57 49 4E 4E ; t.T.y.p.e…WINN
  0000f200h: 54 00 00 00 53 45 52 56 45 52 4E 54 00 00 00 00 ; T…SERVERNT….
  after:
  0000f1f0h: 74 00 54 00 79 00 70 00 65 00 00 00 53 45 52 56 ; t.T.y.p.e…SERV
  0000f200h: 45 52 4E 54 57 49 4E 4E 54 00 00 00 00 00 00 00 ; ERNTWINNT…….

  dmconfig.dll:
  before:
  00005140h: 4C 41 4E 4D 41 4E 4E 54 00 00 00 00 53 45 52 56 ; LANMANNT….SERV
  00005150h: 45 52 4E 54 00 00 00 00 57 49 4E 4E 54 00 00 00 ; ERNT….WINNT…
  after:
  00005140h: 4C 41 4E 4D 41 4E 4E 54 00 00 00 00 57 49 4E 4E ; LANMANNT….WINN
  00005150h: 54 00 00 00 00 00 00 00 53 45 52 56 45 52 4E 54 ; T…….SERVERNT

  dmadmin.exe:
  before:
  00001c30h: 73 65 72 76 65 72 6E 74 00 00 00 00 6C 61 6E 6D ; servernt….lanm
  00001c40h: 61 6E 6E 74 00 00 00 00 50 72 6F 64 75 63 74 54 ; annt….ProductT
  after:
  00001c30h: 77 69 6E 6E 74 00 00 00 00 00 00 00 6C 61 6E 6D ; winnt…….lanm
  00001c40h: 61 6E 6E 74 00 00 00 00 50 72 6F 64 75 63 74 54 ; annt….ProductT


change attr to read only

copy back to C:\windows\system32 \drivers   AND to C:\windows\system32\dllcache
copy back to C:\windows\system32 \drivers   AND to C:\windows\system32\dllcache
copy back to C:\windows\system32 \drivers   AND to C:\windows\system32\dllcache

yes...do that atleast 3 times. 


<note tip>
Windows XP SP3 breaks this "raid1 hack" and files had to be replaced or edited again via recovery console".
</note>