Windows Drive Got Converted to RAW After CHKDSK: How to Recover Data
If your Windows drive converted to RAW after running CHKDSK, your data is most likely still intact. RAW does not mean the files are gone. It means Windows has lost the ability to read the filesystem, usually because of a partition table problem rather than actual data loss. This guide explains why it happens, how to recover your files safely, and how to restore the drive without making things worse.
Before you do anything else: if Windows is prompting you to format the RAW drive, click Cancel. Formatting will wipe recoverable data immediately.
This guide covers both internal hard drives and external drives showing RAW after running CHKDSK. If any of the steps below feel overwhelming, our PC Laptops blog has additional guides on related drive and data topics, and our technicians are available at seven Utah locations and through in-home service if you would rather have someone handle it directly.
What You Need Before You Start
- A working Windows 10 or Windows 11 PC with administrator access
- Access to Command Prompt or Windows Terminal, run as administrator
- A secondary drive or external storage large enough to hold your files
- TestDisk downloaded to a separate USB drive (optional, but useful if CHKDSK alone does not fix the problem)
Why Did CHKDSK Change My Drive to RAW?
CHKDSK did not convert your drive to RAW. It revealed a problem that was already there.
What Windows reports as RAW is almost always a partition table problem, not a filesystem problem. These are two separate layers. The partition table, stored in the MBR or GPT, tells Windows where a partition starts, ends, and what type it is. NTFS is the filesystem that lives inside that partition. When the partition table entry is corrupted or misread, Windows reports the disk as RAW even though the NTFS data underneath may be completely intact.
This is why CHKDSK can detect NTFS while Windows Explorer still shows RAW.
Common causes include sudden power loss or improper shutdown during a disk write, bad sectors that corrupted the Master Boot Record or partition table, malware that modified partition metadata, and unsafe removal of a USB or external drive while data was being written.
According to Statcounter's global desktop OS data, Windows 11 and Windows 10 together make up nearly all active Windows machines, and both are equally vulnerable to this type of partition corruption.
One common mistake: blaming CHKDSK. CHKDSK exposes corruption; it rarely causes it. Fixing the wrong layer wastes time and risks your data.
Step-by-Step: How to Fix a Drive Showing RAW After CHKDSK
Follow these steps in order.
Step 1: Open Disk Management. Go to Control Panel > Administrative Tools > Computer Management and select Disk Management. Confirm your drive shows RAW under the File System column.
Step 2: If Windows prompts you to format the disk, click Cancel. Formatting destroys file data and makes recovery much harder.
Step 3: If your RAW partition has no drive letter, right-click it in Disk Management and select "Change Drive Letter and Paths." Assign an available letter such as X. Skip this step if a letter is already assigned.
Step 4: Open Command Prompt as administrator. Right-click the Start menu and select "Windows Terminal (Admin)" or search for "cmd" and run as administrator.
Step 5: Run chkdsk X: /f (replace X with your actual drive letter). The /f flag fixes logical file system errors and is the faster option to try first.
Step 6: If /f fails or the drive still shows RAW after a restart, run chkdsk X: /r. The /r flag locates bad sectors and attempts to recover readable data, but takes significantly longer. For drives between 500GB and 1TB, expect roughly 15 to 30 minutes with /f and up to two hours with /r. Drives between 2TB and 4TB can take one to four hours or more. Let the process finish without interrupting it.
Step 7: Restart and check File Explorer. If the repair succeeded, the partition will now show as NTFS.
A common mistake here is running /r immediately when /f would have been enough. Always try /f first.
What to Do If CHKDSK Does Not Fix the RAW Drive
If both /f and /r fail, the problem is at the partition table level rather than the filesystem, and CHKDSK cannot reach it.
TestDisk is a free, open-source tool designed for exactly this situation. Download it to a separate USB drive, then follow these steps:
- Launch TestDisk and select the affected disk.
- Choose the partition table type: MBR for older drives, GPT for newer ones.
- Select "Analyse" to scan for partition structure.
- Review the detected NTFS partitions.
- Select "Write" to restore the corrected partition table.
Do not run TestDisk from the same drive you are trying to recover. Always use a separate USB or secondary drive.
If you prefer a graphical interface, AOMEI Partition Assistant and MiniTool Partition Wizard offer similar repair functions with point-and-click navigation.
Should You Recover Your Files Before Attempting Repairs?
Yes, if the drive is at all accessible through recovery software.
Running chkdsk /f on a RAW partition can create "found.000" folders that store recovered file fragments, but in doing so they can overwrite or fragment other recoverable data you have not yet extracted. Recovering files first removes that risk.
Two practical approaches:
Use a data recovery tool such as Recuva, R-Studio, or DiskInternals Partition Recovery to scan the RAW partition. These tools read file data below the filesystem level and copy your files to a separate healthy drive. Run the scan, copy priority files, then proceed with repairs.
If the drive is readable through recovery software but not through File Explorer, copy your most important files to a separate drive before attempting any disk modification.
For external hard drives showing RAW after CHKDSK, connect the drive directly via SATA if possible rather than USB. USB reconnection issues can sometimes cause a healthy drive to appear RAW again during the same session, which complicates diagnosis.
If the drive is making clicking sounds or is not detected in Disk Management at all, skip all software steps and get professional help immediately. That sound indicates a physical failure that software cannot fix.
How to Prevent Your Drive From Converting to RAW Again
Use "Safely Remove Hardware" every time you disconnect a USB or external drive. Pulling a drive during an active write operation is a leading cause of partition table corruption. Click the eject icon in the taskbar and wait for the confirmation before disconnecting.
Use an Uninterruptible Power Supply (UPS) for desktop systems. Sudden power loss mid-write is the top cause of RAW conversion, especially during large file transfers or Windows updates. A UPS gives your system time to finish writing and shut down cleanly.
Set up automated backups. If your files are backed up regularly, a RAW conversion becomes an inconvenience rather than a crisis. Our guide to backing up your computer covers the options worth considering for Utah home users and small businesses.
Run CHKDSK proactively. Use chkdsk X: /scan on a monthly schedule for active drives. The /scan flag checks for errors without modifying the drive, so it is safe to run anytime. Windows Task Scheduler can automate this. Unlike /f or /r, /scan is non-destructive and will not change your filesystem or partition table.
Frequently Asked Questions
Why does CHKDSK read my drive as NTFS but Windows shows it as RAW?
CHKDSK reads the filesystem data stored inside the partition and correctly identifies it as NTFS. Windows reports RAW because the partition table entry in the MBR or GPT is corrupted or missing, so Windows cannot locate the filesystem at the operating system level. These are two separate layers. Fixing the partition table with a tool like TestDisk usually resolves the mismatch.
Is it safe to run CHKDSK /f on a RAW drive?
It carries some risk. Running /f can create found.000 folders that may overwrite file data you have not yet extracted. The safer sequence is to use a data recovery tool to copy your files to a separate drive first, then run /f. If there is nothing worth saving on the drive, running /f directly is fine.
What if my drive is not detected in Disk Management at all?
If your drive does not appear in Disk Management, the issue is likely physical rather than a filesystem or partition table problem. This can result from a failed drive controller, damaged read/write heads, or a seized motor. Software tools will not help at that point. Bring the drive to one of our seven Utah locations or schedule an in-home visit, and our technicians can assess whether the drive is recoverable and handle extraction without you needing to ship it anywhere.
A drive showing RAW after CHKDSK is fixable in most cases, and your data is very likely still there if you avoid formatting and work through the steps above in order. Recover your files before running repairs, then address the partition table if CHKDSK alone is not enough. If you have worked through everything here and the drive is still showing RAW, our technicians at PC Laptops can handle partition recovery and data extraction in person at any of our seven Utah locations.