How to Fix Corrupt Master File Table Error on Windows Without Losing Data (2026)

Encountering a corrupt master file table (MFT) error on your Windows PC is one of the more alarming things that can happen to an NTFS drive. The MFT is the core index that Windows relies on to locate every file and directory on the volume – when it fails, you may see CHKDSK abort with “Windows cannot recover master file table,” your drive listed as RAW in Disk Management, or lose access to files entirely. The good news: your data is usually still physically on the disk. In this guide, I’ll walk you through every working method to fix a corrupt master file table – from CHKDSK and Startup Repair to SFC, malware removal, a Windows Repair Install, and recovering data with Disk Drill when the drive is completely inaccessible – without losing your files.

Critical warning before you start: if Windows is prompting you to format the drive, do not click Format. Formatting will overwrite your data and make recovery significantly harder. Stop using the drive immediately and follow the methods below in order.

What Is the Master File Table – and Why Does It Get Corrupt?

On any NTFS-formatted drive, the Master File Table is a database that stores at least one entry for every file and folder on the volume: file name, size, creation date, access permissions, and the physical location of the data on disk. Think of it as the library’s card catalog – the books (your files) are still on the shelves, but without the catalog, the system has no way to find them.

When the MFT becomes unreadable, Windows displays the error “Corrupt master file table. Windows will attempt to recover master file table from disk” – and if it can’t, CHKDSK aborts and the drive often shows as RAW.

Can you fix a corrupt master file table? Yes – in the majority of cases. CHKDSK, Startup Repair, and SFC resolve most MFT corruption. When those fail, data recovery software can rescue your files before you reformat and start fresh.

Cause	What happened	Best method
Unexpected Shutdown ⚡	Power outage or forced shutdown interrupted a write to the MFT.	CHKDSK → Startup Repair if CHKDSK aborts
Malware Attack 🦠	Virus or ransomware corrupted NTFS system files including the MFT.	Remove Malware first → CHKDSK → SFC
Bad Sectors 💾	MFT stored on a physically failing sector of the drive.	CHKDSK /r → Disk Drill if drive shows as RAW
Interrupted Disk Operation 🔧	Formatting, partitioning, or resizing was stopped mid-process.	Startup Repair → CHKDSK → Repair Install
Drive Unplugged Without Ejecting 🔌	External drive disconnected during a write, leaving MFT in an inconsistent state.	CHKDSK → Disk Drill if files inaccessible

Step-by-Step Guide. How to Fix Corrupt Master File Table:

Method 1: Run CHKDSK in Windows Recovery Environment 🔧

CHKDSK (Check Disk) is Windows’ built-in utility for detecting and repairing file system errors, including MFT corruption. Running it in the Windows Recovery Environment (WinRE) – rather than from within Windows – gives it full access to the drive without conflicts from running processes.

Boot your computer into Windows Recovery Environment (WinRE). You can enter it by restarting and pressing F8 or F11, or by interrupting the boot process three times in a row (Windows will automatically open Recovery after repeated failed boots).
Select Troubleshoot > Advanced options > Command Prompt.
Type the following command and press Enter, replacing C: with the letter of your affected drive:

chkdsk /f /r C:

The /f flag fixes detected errors; /r locates bad sectors and attempts to recover readable data from them.
Wait for the utility to complete. It will display a summary of what was found and fixed.
Restart your PC and check whether the error is resolved.

Note: If CHKDSK reports “Windows cannot recover master file table. CHKDSK aborted,” the corruption is too severe for this tool to handle alone. Move to Method 2, or if your files are inaccessible, use Disk Drill to recover your data before attempting further repairs.

Best for: Minor to moderate MFT corruption caused by unexpected shutdowns, interrupted disk operations, or bad sectors.

Method 2: Run Windows Startup Repair ⚙️

Windows Startup Repair is an automated tool built into the Recovery Environment that can detect and fix a range of boot-level and file system issues – including some MFT corruption that CHKDSK misses.

Restart your PC. When it fails to boot (or force it to fail three times by holding the power button during the Windows logo), it will enter Automatic Repair mode.
Click Advanced options when the recovery screen appears.
Select Troubleshoot > Advanced options > Startup Repair.
Select your Windows account and enter your password if prompted, then click Continue.
Windows will scan for and attempt to fix any issues preventing normal startup, including MFT-related problems.
Restart and check whether the issue is resolved.

Note: Startup Repair handles boot-level corruption automatically but may not fix deeper MFT damage. If it completes without resolving the problem, continue with Method 3.

Best for: MFT errors that prevent Windows from booting, or when CHKDSK did not fully resolve the issue.

Method 3: Use SFC (System File Checker) ✅

The System File Checker scans all protected Windows system files and replaces corrupted versions with correct cached copies. It targets file-level corruption that CHKDSK may not address.

Open Command Prompt as an administrator: right-click the Start button and select Command Prompt (Admin) or Windows Terminal (Admin).
Type the following and press Enter:

sfc /scannow

Wait for the scan to complete – this can take 10–30 minutes depending on your system.
Review the result message. If SFC found and repaired corrupted files, restart your PC and check whether the MFT error is gone.
If SFC reports it could not repair all files, follow it with a DISM scan:

DISM /Online /Cleanup-Image /RestoreHealth

After DISM completes, run sfc /scannow once more.

Note: SFC works best when Windows can still boot. If your system won’t start, run SFC from within WinRE by mounting the Windows partition first.

Best for: File-level system corruption where Windows boots but files or the MFT remain partially damaged.

Method 4: Scan for and Remove Malware 🛡️

Malware – including certain ransomware variants – can directly corrupt the MFT or the NTFS boot sector. Repairing the drive without removing the malware first will often result in re-corruption.

Run a full system scan with Windows Security (Windows Defender): open Start > Windows Security > Virus & threat protection > Quick scan > Scan options > Full scan.
Quarantine or remove any detected threats.
If the infection persists or Windows Security couldn’t run, boot into Safe Mode first: enter WinRE > Troubleshoot > Advanced options > Startup Settings > Restart > press 4 to boot in Safe Mode.
In Safe Mode, consider running a dedicated malware removal tool for a second-opinion scan.
Once the system is confirmed clean, re-run CHKDSK to repair any file system damage left behind.

Note: Some infections may require a bootable antivirus rescue disk if they’ve disabled Windows Security or interfere with Safe Mode.

Best for: MFT corruption caused or triggered by a virus or malware infection.

Method 5: Perform a Windows Repair Install 🔄

A Repair Install (also called an in-place upgrade) reinstalls all Windows system files while preserving your personal files, installed applications, and settings. It’s the most thorough fix for severe MFT and system file corruption when other methods have failed.

Download the Windows Media Creation Tool from Microsoft’s official website on a working PC.
Create a bootable USB drive using the tool.
Boot your affected PC from the USB drive.
When the Windows Setup screen appears, select “Upgrade this PC now” rather than a clean install – this performs the repair while keeping your data.
Follow the on-screen instructions. The process will replace all corrupted system files, including those responsible for MFT management.
After completion, run CHKDSK once more to verify the file system is healthy.

Note: A repair install is designed to preserve personal data, but back up anything important to an external drive before proceeding – especially given that the drive is already in a partially corrupted state.

Best for: Severe or persistent MFT corruption that CHKDSK, Startup Repair, and SFC were unable to resolve.

What If CHKDSK Aborted and You Can’t Access Your Files?

When CHKDSK aborts with “Windows cannot recover master file table” and your drive shows as RAW, the repair methods above may not be enough to get your files back – but that doesn’t mean the data is gone. The files are typically still physically present on the disk; Windows just can’t locate them without a working MFT. This is exactly the scenario where Disk Drill steps in.

Disk Drill bypasses the MFT entirely and scans the raw sectors of your drive directly, reconstructing file and folder structure from the underlying data. It supports NTFS, FAT32, exFAT, and RAW volumes, and can recover documents, photos, videos, and other files even when the drive is completely inaccessible in Windows Explorer.

Download and install Disk Drill from the official website – install it on a different drive than the one you’re recovering from.
Launch Disk Drill and select the affected drive from the list (it will appear even if Windows can’t access it normally).
Click “Search for lost data” and let the deep scan run – this can take a while on larger drives but will find significantly more than a quick scan.
When the scan completes, browse the Deleted or Lost and Reconstructed categories. Use the preview panel to verify files before recovering them.
Select the files you need and click “Recover” – save them to an external drive, never to the same disk being recovered.
Once your data is safely recovered, you can reformat the drive and reinstall Windows cleanly.

Note: Run Disk Drill before attempting a Repair Install or any format operation. Every write to the affected drive reduces the window for successful recovery.

Best for: Rescuing files from a drive with a corrupt MFT when the drive appears as RAW, CHKDSK has aborted, and Windows cannot access the data through normal means.

Precautions and Tips to Avoid Corrupt Master File Table Errors:

Handle with Care ⚠️

Use an Uninterruptible Power Supply (UPS) to protect against sudden power loss during disk writes – the most common single cause of MFT corruption.
Always use the Safely Remove Hardware option before disconnecting any external drive. Unplugging during a write is a reliable way to corrupt the MFT.
Regularly create System Restore points so you have a recent rollback option if system file corruption occurs.
Keep Windows and your drivers up to date – outdated storage drivers are a known source of disk write errors that can damage the MFT.
Run Disk Utility’s error-checking tool (right-click drive in File Explorer > Properties > Tools > Check) periodically to catch early signs of file system issues before they escalate to full MFT corruption.
Disk imaging software such as Macrium Reflect or Acronis True Image can create full system snapshots that allow you to restore your entire drive – including the MFT – to a healthy state.

Final Thoughts:

A corrupt master file table is a serious error, but it’s fixable in the majority of cases – and your data is usually still physically present on the disk. Here’s what to keep in mind:

Never format the drive when Windows prompts you – this overwrites recoverable data.
Stop writing to the drive immediately to preserve as much as possible.
CHKDSK and Startup Repair resolve most cases of MFT corruption.
SFC addresses deeper file-level damage that CHKDSK misses.
Repair Install is the last resort when all built-in tools have failed.
If the drive shows as RAW and CHKDSK has aborted, recover your files with Disk Drill before any format or reinstall.

FAQ

What are the symptoms of a corrupt Master File Table (MFT) on an NTFS filesystem?

A corrupt MFT may lead to error messages indicating missing or damaged files, inaccessible drives, blue screen errors, or system crashes when attempting to access certain files.

How can corruption occur in the Master File Table?

The MFT can become corrupted due to hardware failures, software glitches, sudden power outages, or malware attacks that interfere with the file system.

What are the standard tools to repair a Corrupt Master File Table on Windows?

The built-in Windows utility chkdsk can be used to check the integrity of the filesystem and attempt to repair corrupt MFT issues.

Can a corrupt Master File Table lead to data loss?

Yes, a corrupt MFT can lead to partial or complete data loss if the table cannot map the stored files correctly for retrieval.

Is there a way to recover data from a drive with a corrupted Master File Table?

Data recovery software may be capable of restoring data from a drive with a corrupt MFT by bypassing the file system and directly accessing files. Visit official data recovery service providers such as Ontrack for professional assistance.

Can anti-virus software prevent MFT corruption?

While anti-virus software is crucial for preventing malware attacks, which can cause MFT corruption, it cannot prevent all types of corruption, such as those due to hardware failures.

Will formatting the drive repair a corrupt Master File Table?

Formatting the drive will create a new MFT, effectively removing the corruption, but this process will also erase all existing data on the drive.

Can running a disk defragmenter resolve MFT issues?

A disk defragmenter will not fix a corrupt MFT, as its purpose is to reorganize data for efficiency, rather than repair the filesystem structure.

Are there any operating system features that help protect the MFT from corruption?

Windows includes features like Shadow Copies and regular automatic backups that help protect against data loss, which may indirectly prevent severe MFT corruption consequences.

If the MFT is corrupted, can I still boot into Windows?

If Windows cannot read essential files due to MFT corruption, you may be unable to boot. Booting from a recovery drive or installation media may be necessary.