use config magic lock the hd, then choose the backup Eeprom option, go to c and ftp the files eeprombeforebackup and eepromafterwhatever to your pc, that way you have the key files to fix it in the event your stuff ever totally dies ,
you need to lock any hd larger than stock, because the M$ dash looks for the retail locked drive, if it dont find one then you get an error code 6-13 i believe are all hdd related.
lock it and its good, msdash will load with chip off or on, good to have in case time needs to be set and your drive isnt locked.