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Hitachi Headmap HDS721616PLAT80

Posted: Tue Apr 10, 2018 12:39 pm
by pclab
Hi Guys

I have this old Hitachi here that had a head crash and the top platter is damaged. I wanted to to a headmap on NVRAM, but after I change everything to 00 and save, it doesn’t save (after power off/on).

This models have any specifications??
Thanks

Hitachi Headmap HDS721616PLAT80

Posted: Tue Apr 10, 2018 1:54 pm
by jol
Head map "E6 ?"

try to replace the PCB, maybe the serial flash where the NVRAM/ROM is stored is faulty and cant write to it ?!
you can also try to remove the chip and try to use an external programmer (to check out why/if it not accepting the changes)

Hitachi Headmap HDS721616PLAT80

Posted: Tue Apr 10, 2018 2:02 pm
by pclab
I have tested the donor PCB and same info appears, E6 too.

I have only PCB connected.

Hitachi Headmap HDS721616PLAT80

Posted: Tue Apr 10, 2018 2:12 pm
by Jared
I think there are certain HGST/Hitachi drives that PC-3000 can't properly read/edit the head map. Luke has posted some strange anomalies about this in the past too.

If you really want to edit the head map you may have to figure out how to do it manually.