硬件行情

Hitachi hard drive firmware 数据恢复细读

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Firmware copy: Copy 0(SA-A), Copy 1(SA-B) and Factory copy(SA-C). Copy 1 is a copy of Copy 0, but not all modules are present in Copy 1. Factory copy locates on different area from Copy 0 and Copy 1 within the service area. There is a flag recorded on NVRAM, which decides which one is boot at power-up.For drive with more two heads or more, Copy 0 and factory copy locate on primary head while copy 1 locates on secondary head. While for drive with one head only, the three copies locate on the same head.固件兼容性: there is a version marker recorded in modules like RESF/RAM0/OVR1 etc, which can be used to identify compatible firmware modules.

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Hitachi hard drive key firmware modules（日立硬盘固件主要模块）

技王数据恢复

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USAG/RESF 模块: Modules table, indicate location of listed module in service areaRSVD 模块: not listed in modules table; it marks the beginning of service areaCritical 模块: listed in modules table, critical for drive operation.Auxiliary 模块: not listed in modules table, in charge of auxiliary drive operation, e.g., selftest. 技王数据恢复