Working on a 3TB Seagate.

The HDD goes smooth image in few areas, then very slow, then again smooth image, then again very slow or bad sectors.

Tried to image by selective head... To all the heads/surfaces the behavior is same.

Is it media damage? or something else? Any thought?

The access till 4XXXXXXX sectors are smooth by all heads... the the behavior happens.

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any difference imaging that area backwards?

It's similar even in backward image

_________________
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There is no substitute for education and experience
THANK YOU
SHAHI
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Hi ,
its Been a Long Time How Are you .I Hate Seagate F3 Family It sucks Big Time .

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Amarbir S Dhillon , Chandigarh Data Recovery Labs [India]
Logical,Semi Physical And Physical Data Recovery
Website-> http://www.chandigarhdatarecovery.com

I've seen this on a dropped DM as well, heads 'seem' to be OK, but it goes fast/slow/fast/slow with the slow parts often timing out. Happens in random places on all heads.

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Data Recovery Cape Town

It was not dropped.

Slow would be ok, but bad sectors/can't image!

Based on different opinion it's suspected very likely it has media damage. After discussing with customer, I didn't open the HDD to check further.

Customer decided to send this case to SEAGATE DATA RECOVERY SERVICE!

_________________
__________
There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com