# Windows – CHKDSK doesn’t complete, can’t clear dirty bit

At some unknown point, the dirty bit on my C: was set (verified with fsutil), and now chkdsk runs on every boot. However, it always aborts at ~51%, preventing the dirty bit from being turned off. I booted into the Recovery Console and tried almost every chkdsk recovery option (/f, /r, /b), and they all fail some way through. From what I have gathered, this implies that there are sectors that are bad in ways that chkdsk doesn't handle (although those details are obviously unclear).

I tried a Hail Mary suggestion from another site: back up an image of the drive, format, restore the image, but that was ineffective…I used Acronis Backup & Restore, and I suspect it's restoring the problematic sector as well.

I don't think the drive is bad or is going bad. It's a fairly new Crucial mSATA SSD. Best guess, something like a power blip caused the corrupted sector. Otherwise, there are no problems, and everything runs fine.

Any suggestions on what to try next? Since I've successfully round-tripped my backup image, I'd be willing to try just about anything.

Edit: FYI, this is the chkdsk output using any of the repair options:

Stage 2: Examining file name linkage ...

Correcting error in index \$130 for file 203615.
An unspecified error occurred (766f6c756d652e63 461).


That's where it ends, and punts me back to the command prompt. I also tried the suggestions I have seen for this error – run Dism and/or sfc – but neither worked.