Hello everyone,

What is this is data exctractor process is doing every new task?

see the attached print screen.

it does what it says, fills the used/unused sectors map in the background.
edit: However, as i just checked, can't find such map in additional maps,where i expected to have it being used.

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Adatmentés - Data recovery

So any idea what is this process does?

Yes, it is filling that map. But better ask ACE where exactly that map is used.
sorry.

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Adatmentés - Data recovery