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synergypsp

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"the file or directory is corrupted and unreadable" error in normal boot mode, but clean in safe mode

I have a NAS drive that is showing "the file or directory is corrupted and unreadable" errors. The drive array is a large one at 16 terabytes or so.

When I boot into safe mode, I can read all directories that had errors with no issues.

What is the difference between safe mode and normal boot mode, when it comes to reading a hard disk (this one is connected through USB)?
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ZamZ0

Generally, less resources are called/less processes are launched.

Have you run chkdksk /f /r form elevated command prompt? Also try sfc /scannow
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LeeTutor
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synergypsp, any feedback?
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It takes 24+ hours to run a chkdsk on 16tb of data with a sector check over USB. Working on it. :-)
Update - The sfc /scannow found no errors. The scandisk reported several errors that were fixed. But the issue is still there. Now going through disabling services/programs. Will keep you updated.
The solution by LeeTutor solved the problem. It was a USB turbo drive, and a USB driver monitor that was added by third party software, for a controller card that is not being used. Commented out their execution in the registry and problem solved.

Thank you LeeTutor.