I think nobody is listening to me

This Model WILL NOT WORK and YOU WILL NOT BE ABLE TO ACCESS SA (SO YOU WILL NOT BE ABLE TO READ FACTORY COPY OF NVRAM) with different NVRAM even if this NVRAM has exactly the SAME revision because each drive has UNIQUE SA coordinates stored inside the NVRAM.
I really don't understand what are these suggestions all about
Only one way to access original SA is BRUTE FORCE SA coordinates which stored inside NVRAM or use original NVRAM which is impossible as I understood

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SAN, NAS, RAID, Server, and HDD Data Recovery.

Hi Doomer!

Could you specify this term "BRUTE FORCE SA", I am not familiar with it in English.

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www.datarecoveryne.com

You need to some how figure out the correct SA coordinates inside non-original NVRAM to reach SA

This is the procedure which could be used
1. Read current coordinates from NVRAM
2. Increment/decrement coordiantes by 1
3. Write coordinates back to NVRAM
4. Re-power drive
5. Check SA accessibility
6. Repeat 1-5 if 5 is unsuccessful

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SAN, NAS, RAID, Server, and HDD Data Recovery.

I've never been able to hotswap Hitachi / IBM mobile drives. Often, the head on the target will stop on the platter.

Jon

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http://www.datasaversllc.com

Hi guys thank you all for participating, i spoke to the tech support from salvationdata and described to him the problem, according to him the NVRAM is working but the contents got corrupted. The only way to fix it as Doomer mentioned is brute force or access to original NVRAM which is located in SA-A, B or C, according to him the hdd doctor for hitachi is capable of searching the original nvram located on SA-A, B and C, if found it will re-write the corrupted NVRAM, which sounds very interesting. Does it make any sense guys?

Anyone have any experience with hdd doctor for hitachi?

Corect phrase should be
The only way to fix it as Doomer mentioned is brute force and after that access to original NVRAM which is located in SA

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SAN, NAS, RAID, Server, and HDD Data Recovery.

I didn't use HDD doctor
But I used my own software to do the same procedure and it works

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SAN, NAS, RAID, Server, and HDD Data Recovery.

B is FLASH MEMORY

I have a HDD HTS722016K9SA00 with PCB 220 0a90002 01. I powered it with a sata to molex converter, and used a cooler molex, so 12v instead of 5v. I guess now my only chance is to find a good PCB and to swap the NVRAM.
Swapping the NVRAM is not that hard, my question is, will any 220 0a90002 01 work? As I see, this PCB is used in many Hitachi Travelstars.