If you are going to provide hitachi data recovery services, the following data recovery tips are useful to you!
Two architectures: IBM architecture including original IBM drive and Hitachi drive from 2003 ; and Native Hitachi architecture(unsupported), i.e. DK23AA , DK23FA etc.
On IBM/HITACHI we can find two product lines: Travelstar and Deskstar. Identification by model number: HTS541616J9AT00 and HDS721616PLAT80
HITACHI Drive Firmware
-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.
-Firmware compatibility: there is a version marker recorded in modules like RESF/RAM0/OVR1 etc, which can be used to identify compatible firmware modules.
NVRAM Data Structure
1: NVRAM version, A60A
2: Version checksum
3: FW boot flag. “0x01” boot from SA-A and “0x00” from SA-C, factory copy.
4: Head map “00 01 02 00”
5: Beginning of data area on disk surface. “14F1” (High byte backward, low byte forward)
6: Beginning of service area on disk surface. “83F8” (High byte backward, low byte forward).
7 : XGH7Z3DM, S/N on the label.
Hitachi data recovery tool recommended: HD Doctor for Hitachi
Data recovery Salon welcomes your comments and share with us your ideas, suggestions and experience. Data recovery salon is dedicated in sharing the most useful data recovery information with our users and only if you are good at data recovery or related knowledge, please kindly drop us an email and we will publish your article here. We need to make data recovery Salon to be the most professional and free data recovery E-book online.