ROM/NVRAM on logic board

[John1]

If original ROM/NVRAM chip on a hard drive logic board is damaged, can it be replaced by new chip and programmed with default firmware for that kind of hard drive?
Or once ROM/NVRAM damaged , hard drive is useless because hard drive is unique for each hard drive?
Thank you for reply.

[northwind]

In most cases, it's unique. It depends on the drive.
For example, Toshiba and new Seagates -- absolutely unique.

[pepe]

i may be guessing wrong but i think he's working on this drive: https://forum.hddguru.com/viewtopic.php?f=1&t=42893

If so, the answer is that the rom - besides fw code - contains the NVRAM image which is unique to every drive, so it wont work if you rewrite it from another drive.
I can reciver the original one if the data is worth it ...


pepe