It is not easy to locate the exact issue you are refering to with the minimal discription posted. Could you post an error log for us?
try downloading rcpairs.zip from
http://downloads.phathack.com/ and put the level 10 pair on the drive.
also, make a copy of phatd.sig but name it bootload.log
put the DMS into your phatbox and let it try to boot.
when it fails, get the bootload.log and the logfile.txt and post them for us.
Thank you.