betty
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Possible to Rebuild Corrupted NVRAM of Hitachi ARM Drive?

Wed May 08, 2019 12:33 am

thanks Jared..


I tried to write the nv-ram which u had given... but the following error showing....


Test : Reading NV-RAM
Copies.................................. : Working
Reading NV-RAM to profile folder (D:\Program Files\ACE Lab\PC-3000\Bin\!Profiles\HITACHI-IBM-ARM\5C10CLA3\nilesh buldana hitachi 1tb OLD\Data\NV-RAM)
NV-RAM.nvr.............................. : Ok


Test : Writing NV-RAM
Writing NV-RAM from file ( C:\Users\betty\Desktop\nilesh buldana NVRAM\jared\NV-RAM (copy3).nvr )
Loading............................................................... : Ok
TNV_RAM.Assign: invalid src!
Writing NV-RAM.......................... : Error


Test : Writing NV-RAM
Writing NV-RAM from file ( C:\Users\betty\Desktop\nilesh buldana NVRAM\jared\NV-RAM (copy3).nvr )
Loading............................................................... : Ok
TNV_RAM.Assign: invalid src!
Writing NV-RAM.......................... : Error



Note:
Rom has 5 copies of NV-RAM. Please check Offset 28000,29000,3B000,3C000 & 3F000

betty
Data Recovery Novice
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Joined: Mon Feb 01, 2016 9:01 am
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Possible to Rebuild Corrupted NVRAM of Hitachi ARM Drive?

Wed May 08, 2019 12:40 am

One more thing is that, the size of original NV_RAM is 4 KB and the new one is 5 KB . Is it possible of size difference ?

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Jared
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Possible to Rebuild Corrupted NVRAM of Hitachi ARM Drive?

Wed May 08, 2019 1:21 pm

My mistake. I didn't carve it out right and had some extra bytes at the beginning. Also, it looks like your original NV-RAM matched copies 3 and 4, so it's copy 1 or 2 you should try.

Here's all four copies of the NVRAM from the ROM code:
NV-RAM (copy2).nvr
(4 KiB) Downloaded 16 times
NV-RAM (copy3).nvr
(4 KiB) Downloaded 13 times
NV-RAM (copy4).nvr
(4 KiB) Downloaded 17 times
NV-RAM (copy1).nvr
(4 KiB) Downloaded 19 times


Try using number 1 or 2 (they're the same) and see if it makes a difference.

betty
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Possible to Rebuild Corrupted NVRAM of Hitachi ARM Drive?

Thu May 09, 2019 2:54 am

thanks jared,

I upload copy 1 ,2 one by one... but no Spin ... i tried rest other copies... same result


May be the rom files were corrupted . Is it possible ?

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Jared
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Possible to Rebuild Corrupted NVRAM of Hitachi ARM Drive?

Thu May 09, 2019 8:03 am

betty wrote:Source of the post Is it possible ?


Yes, it is possible. If I were you, I'd find a close matched donor with the same FW revision (or even two or three) and compare the NVRAMs of them all. There are only certain segments of the NVRAM that are actually unique to each drive. You might find that a few bits have been flipped and thrown off a few values that are necessary code that isn't drive specific.

Also, you might want to try putting those NVRAM codes into another ROM of the same firmware. It's possible that it's other code in the ROM that's corrupt besides just the NVRAM code.

betty
Data Recovery Novice
Posts: 72
Joined: Mon Feb 01, 2016 9:01 am
Location: India
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Possible to Rebuild Corrupted NVRAM of Hitachi ARM Drive?

Thu May 09, 2019 8:47 am

thanks Jared

I would go for the donor with same f/w...


Also any one have the same hdd please upload the ROM &NV-RAM

HITACHI 1 TB
P/N:HX123Z9H
MODEL:HDS5C1010CLA382
MLC:JPC3MA
FW:3MA

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