One, WD module head resolution (common to all modules)
WD Marvell hard disks (except Hawk2 and before), all modules are
The beginning of "524F594C (corresponding character:ROYL)".
data analysis:
0x00 ~ 0x03: Module Tag [4]
0x04 ~ 0x05: Start Level [2]
0x06 ~ 0x07: Valid data address [2]
0x08 ~...