Fix master file record error

Question

I have seen windows bugs trash everything in sight. Large capacity disks with games for example was not fixable by CHKDSK which was not even able to notice a disk was present. I had to resort to DISKPART and CLEAN the disk to recover. Downloading games again is just the tip of the iceberg. '

For some reason my machine shut down immediately suggesting a serious error occurred which is very rare. Power down usually takes a few seconds.

The machine is an old Dell XPS 15 9570 with and i7-8750H and 32GB DDR4 at present but I may install 64GB which I have available. The machine also has a GTX 1050 Ti graphics chip with 4GB VRAM. I have a 2TB WD SN580 SSD which is PCIe 4.0 and it is fast enough to almost saturate the PCIe 3.0 x4 slot.

Dell diagnostics come up OK.

Answer 1

Hi HARDCORE GAMES™,

Thank you for sharing the additional details.

I can certainly understand your frustration, especially after having to re-download approximately 18 TB of game data. An unexpected immediate shutdown followed by file system corruption is understandably concerning.

Based on what you've described, there does not appear to be sufficient evidence to determine whether the root cause was the file system corruption itself, a storage device issue, a controller/firmware problem, or another hardware or software condition that led to the abrupt shutdown. Since neither Event Viewer nor the available diagnostics identified a clear cause, it is difficult to draw a definitive conclusion.

Regarding CHKDSK, Microsoft documents that it can repair many logical file system errors, but there are cases where corruption cannot be repaired and recovery must come from backups or by recreating the volume.

Your suggestion about additional protection for critical NTFS metadata is valuable feedback. However, I am not aware of any Microsoft documentation confirming that Windows currently maintains the type of independently recoverable duplicate Master File Table copy that you are proposing, so I cannot confirm whether the behavior you described is technically feasible within the current NTFS design.

At this stage, since the disk is functioning again after being cleaned and recreated, the most productive next step may be to submit your observations through Feedback Hub so that the Windows engineering team can review the scenario and your resiliency suggestions directly.

You can submit your feedback by clicking Windows + F. For more reference: Send feedback to Microsoft with the Feedback Hub app.

Thank you for taking the time to document the behavior and the troubleshooting results.

Answer 2

Because Windows shut down immediately suggests a serious malfunction. Laptops have batteries so power reserve is ready for an orderly power down.

Given CHKDSK had nothing to work with and other tools also could not help.

The error with a mangled master file table left CHKDSK with nothing to work with. This is why a duplicate should be maintained using the NTFS transaction API to be sure the table is consistent.

Answer 3

CHKDSK /F failed to repair the error state

Disk Management also spewed an error with the disk

I resorted to DISKPART -> CLEAN to recover the disk as no tool fixed it

I believe Windows needs to maintain a backup copy of the Master File table so prevent this error state from becoming a fatal error.

Answer 4

Hi HARDCORE GAMES™,

I understand how frustrating this can be, especially when a storage issue affects a large game drive and CHKDSK is not able to repair it normally.

Based on your description, I would first treat this as a possible NTFS/file system corruption or disk integrity issue after an unexpected shutdown. Before trying any repair command, please back up any files that are still accessible. Microsoft’s chkdsk tool checks the file system and file system metadata for logical and physical errors, and repair options such as /f or /r can attempt to fix detected issues.

Please try these steps:

1, Open Command Prompt as administrator, then run a read-only scan first: chkdsk X:

Replace X: with the affected drive letter.

2, If errors are reported, run: chkdsk X: /f

If Windows says the drive is in use, allow it to run at the next restart.

3, If the issue may involve unreadable sectors, you can run: chkdsk X: /r

Please note that /r includes the repair function and can take a long time on large drives. Microsoft also notes that repeated full-surface scans on SSDs should be used carefully, so I would only use this when needed.

After the scan, check whether the drive is stable in Disk Management and whether the files are accessible. If the drive is still not readable or CHKDSK cannot complete, avoid using DISKPART CLEAN unless you have accepted that the data on that disk may be lost. Microsoft documents that the clean command removes partition or volume formatting from the selected disk, and clean all deletes data by zeroing sectors.

If the data is important and the disk is not readable after the above checks, the safest next step is to stop writing to the drive and consider professional data recovery before formatting or cleaning the disk. If the data is already backed up or can be downloaded again, recreating the partition and formatting the disk may be reasonable.