only thing i can think of is that maybe im using xbtool incorrect?
i open xbtool
open my 1 meg bios
change a couple thingd=s
set lba48 to take rest on partition 6
then save bios
burn to cdrw
load ozx flash
do the swap
then it shuts down
when booting back up colors are changed, slayers auto is in there, so it boots up drives read zero, i reformat then drives f reads 155 gig.
i shut down wait about 2 mins, reboot goes into loading without any cdrw or dvdr in no (x2 shows up under the xbox logo. then it just freezez.
i reboot with slyers back in hdd reads all zeros again.
so just maybe im using xbtool incorrect, but all seems to be self exlanitory.
please let me know the steps people have done, so as this will probably help many others as well