Windows 8.1 CRC error reading volume.

Gregg H · May 3, 2017

I am using CreateFile to open a snapshot volume, and ReadFile to read from it. On one system I had an attempt to read 1 mb fail with a CRC error. As I understand it, the drive should be doing its own bad sector mapping, but apparently it's not. I know that NTFS has bad sector handling, does that apply only to reading/writing at the file level? In other words, by reading at the volume level am I bypassing anything the OS might do to "hide" bad sectors?

Neemobeer · May 3, 2017

Windows maintains bad sector information in the MFT so if you're bypassing the file system, then you'd need to do your own bad sector checking.

Neemobeer · May 3, 2017

Windows maintains bad sector information in the MFT so if you're bypassing the file system, then you'd need to do your own bad sector checking.

Neemobeer · May 3, 2017

The 9th entry in the MFT so index 8 points to a file called $BadClus this file contains a list of all bad sectors. You would need SYSTEM access in order to read the MFT though.

Windows 8.1 CRC error reading volume.

Gregg H

New Member

Neemobeer

Neemobeer

Cloud Security Engineer

Neemobeer

Cloud Security Engineer

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