WD80EFBX-68AZZN0, swapped heads, cant ram map heads

[Alandata Recovery]

   Model : WDC WD80EFBX-68AZZN0
  Serial : VRGWHL6K
Firmware : 85.00A85
Capacity : 8 TB (15 628 053 168)

This drive was dropped

h0 was bent and gone

swapped in new heads

drive came ready after a few tries

accept PSID

backedup resources

ran structure test

sound good

but gets error when you read UNC ABR

Ace says a head probably cant read surface ( maybe scratches)

I would like to edit the head map but ace says not supported.

Is there a way to edit headmap 

thanks

--

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[Data Recovery Guru]

Does it give UNC ABR if doing a write test on a useless module in SA? If, yes, probably system head is not reading/is damaged.

If not, then where is the drive coming from? External Drive (maybe there is encryption through the controller board)?

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[Alandata Recovery]

h0 was missing 

so that platter is probably scratched

when we put the new heads in it tried to ready but quit shortly

we repowered a few times and it retried longer and finally recalled and came ready

we read the SA 

backed up resources, logs etc.

left it for ace to look at.

next repower it doesnt come ready anymore

h0 is probably crashing and got lucky once.

If we could ram map head map then we could disable 0 add probably start cloning.

cant do the write test now

so its done for now....

Thanks for the suggestion

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[Data Recovery Guru]

Yeah, definitely sounds like disk damage.

DATARECOVERYGURU TEAM

(617) 571-9172

www.datarecoveryguru.com

Offices are open Mon-Fri 9AM to 4:30PM. 

Available by appointment outside business hours.

Boston: 100 Massachusetts Ave, Suite 500 (5th Floor), Boston, MA 02155
Cambridge: 1 Mifflin Place, Suite 400 (4th Floor), Cambridge MA 02138
Dedham: 3 Allied Drive, Suite 303 (3rd Floor), Dedham, MA 02026

Burlington: 1500 District Ave, 1st Floor, Burlington, MA 01803

Framingham: 945 Concord St., 1st Floor, Framingham, MA 01701

Providence: 10 Dorrance St., Suite 700 (7th Floor), Providence, RI 02903

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[Artem Rubtsov]

HGST CCB-s don't like when you disable heads in the map, especially system heads, even if the map would have been supported by PC3K it likely wouldn't be of any help. 

[Alandata Recovery]

Can you deal with this situation? 

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[Artem Rubtsov]

No

[Artem Rubtsov]

Hmm, my reply got deleted somehow.

I said - no, I cannot. 

On Wednesday, September 3, 2025 at 5:09:33 PM UTC-5 Alandata Recovery wrote: