if you have a chip use config magic or use unleashx or avalaunch they have a built in option.... if you dont have a chip then u will need the eeprom and xboxHDM....
I don't have a chip and im trying to use xboxhd but when i try and lock the hd i get this message that says that the drive in the primary master is frozen or something to that affect. Then it says to do something with my computer bios. What am i doing wrong?