HD error - partition tools ok, but windows barfs and can't access files

[chicagojay]

I had a drive in a NAS that became unaccessible. I took it out and put in my desktop and Windows can see it. Windows even returns the first level folders but then barfs with a generic System volume is not accessible/Access is denied error if I try to go deeper.

Partition tools are able to browse the whole tree no problem. I tried using SpinRite and that also errored out doing a full read of the drive with an error the size of a partition in the BIOS did not match the MBR (this is not a boot drive.)

Interestingly Seagate tools doesn't see the drive at all.

I'm guessing there is a hardware error but just wondering if anyone has any ideas.

Update: I ran the WD tools and it came back with too many bad sectors detected. Any hope of retrieving anything?

 

[RolandJS]

This NAS was not a RAID, correct? I'm trying to visualize the NAS setup inside the box. If this HD is undergoing increasingly, more and more, a physical failure, a data recovery specialist/company may be your best choice at this point.

 

[USAFRet]

I had a drive in a NAS that became unaccessible. I took it out and put in my desktop and Windows can see it. Windows even returns the first level folders but then barfs with a generic System volume is not accessible/Access is denied error if I try to go deeper.

Partition tools are able to browse the whole tree no problem. I tried using SpinRite and that also errored out doing a full read of the drive with an error the size of a partition in the BIOS did not match the MBR (this is not a boot drive.)

Interestingly Seagate tools doesn't see the drive at all.

I'm guessing there is a hardware error but just wondering if anyone has any ideas.

Update: I ran the WD tools and it came back with too many bad sectors detected. Any hope of retrieving anything?

More info needed:

What NAS?
RAID or not RAID?

Sounds like a physically failing drive.
This is what backups are for.