Hi,
I have an old 6Y080L0422011-YAR41BW0 drive which has the following modules damaged:
02AA0032, 01930001, 01940001, 01950002.
The hdd is properly detected in bios, windows loads with a few minutes delay and only device manager can see it.
Is it possible to restore drive's functionality and restore data?

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Those who know don’t talk. Those who talk don’t know.

Does it show proper capacity? And if so, have you tried imaging using ddrescue?

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Data Medics - Hard Drive, SSD, and RAID Data Recovery Service Company

Thanks for your reply, I guess capacity is correct, as it shows 82Gb in BIOS. I haven't tried imaging at all, because I thought imaging software wouldn't see the drive either (just like Windows disk management doesn't see it). I am more comfortable with DOS programs like Prosoft or copyr.dma, might give them a try. My idea was to repair the drive's firmware first and then proceed to DR. What are the above mentioned modules and are they replaceable by same modules from a similar drive? Or is it not the right way to follow? Or problem may be something quite different than a few unreadable modules?

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Those who know don’t talk. Those who talk don’t know.

How are you reading the firmware? With what tool?

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Hard Disk Drive (HDD), Solid State Drive (SSD, SATA, NVMe, etc), USB Flash Drive and RAID Data Recovery Specialist in Massachusetts

PC3K ISA (Poker v2.1)

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Those who know don’t talk. Those who talk don’t know.

Man, those were a lot of work.

My suggestion in general for data recovery is this: don't fix something that does not need fixing!
This goes particularly for Maxtor. Playing with firmware on a unstable Maxtor drive is like asking for trouble.
So, test your drive for data access, run some tests, then if all good, image it. Then worry about fixing and such.

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Hard Disk Drive (HDD), Solid State Drive (SSD, SATA, NVMe, etc), USB Flash Drive and RAID Data Recovery Specialist in Massachusetts

Tried copyr, shows all errors. In MHDD ERR and HPA is lit (in addition to DRSC and DRDY).
In the meantime I found some answers to my questions: the damaged modules are SMART and G-list. I cannot clear, nor overwrite G-list, which - according to the docs I found - is necessary for normal work. I think it lies on a physically damaged sector. Is there a way to relocate G-list?

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Those who know don’t talk. Those who talk don’t know.

Using wrong tool the wrong way....

P.S. SMART is not exactly mandatory on Calypso, neither G list. And if you have a real bad U (not a corrupted module) in that position the drive should click at start. The fact there is HPA on means there is also something else AND / OR someone played hard with the drive firmware.
There are also other things to consider...