How to Fix “The Type of the File System Is RAW” Error Without Losing Data

Seeing the error message “the type of the file system is raw” can be stressful, especially when important files suddenly become inaccessible. This problem usually appears when a hard drive, USB drive, SD card, or external storage device develops file system corruption. Instead of showing NTFS, FAT32, or exFAT, Windows detects the partition as RAW and may request formatting before use.

In many cases, users also encounter similar warnings such as “the type of file system is raw” or “the type of this file system is raw” while running CHKDSK or opening a damaged partition. Fortunately, the issue is often repairable, and lost files may still be recoverable if the correct steps are followed.

This guide explains the causes behind RAW file systems, methods to recover data safely, and practical ways to repair corrupted storage devices without permanent data loss.

Understanding RAW File System Errors

What Does a RAW File System Mean?

A RAW file system indicates that Windows cannot recognize the partition structure of a storage device. Normally, operating systems rely on file systems like NTFS, FAT32, or exFAT to organize and access files properly.

When corruption occurs, the drive loses its recognizable structure, causing the operating system to classify it as RAW instead.

Users may notice:

• Missing files and folders
• Inaccessible partitions
• Formatting prompts
• Drive size displaying incorrectly
• CHKDSK errors
• System freezes during access

Many users first discover the issue after seeing the message “the type of the file system is raw” while attempting to repair the drive using command-line tools.

Common Symptoms of RAW File System Problems

RAW file system issues can affect internal hard drives, SSDs, USB flash drives, memory cards, and external storage devices.

Common warning signs include:

• “You need to format the disk before you can use it”
• Partition showing as RAW in Disk Management
• Windows unable to open the drive
• Files suddenly disappearing
• Storage device asking for formatting repeatedly

Sometimes the drive still appears with the correct capacity, but the operating system cannot access the stored content.

Why Drives Become RAW

Several factors may cause file system corruption.

The most common causes include:

• Unsafe device removal
• Virus or malware attacks
• Power outages during file transfers
• Corrupted partition tables
• Bad sectors
• Failed operating system updates
• Hardware failure
• Interrupted formatting

Why Data Recovery Is Possible From RAW Drives

How Files Remain Recoverable

When a drive becomes RAW, the actual stored data often remains intact temporarily. The operating system mainly loses access to the file structure rather than instantly erasing all stored content.

This is why recovery software can often:

• Locate deleted partitions
• Restore inaccessible documents
• Recover lost images and videos
• Rebuild damaged file indexes

Many users successfully retrieve important data even after receiving “the type of file system is raw” errors repeatedly.

Factors That Affect Recovery Success

The success of RAW partition recovery depends on multiple conditions.

Key factors include:

• Whether new data overwrote old files
• Physical condition of the drive
• Severity of corruption
• Presence of bad sectors
• Storage device age

If the device experiences severe hardware failure, recovery may become more difficult.

When to Stop Using the Drive

To maximize recovery success, users should stop using the affected drive immediately.

Avoid:

• Saving new files
• Formatting the partition
• Running repeated repair attempts
• Installing software onto the damaged drive

Recover Files From RAW Drives Using PandaOffice Drecov

Why Choose PandaOffice Drecov Recovery Software?

PandaOffice Drecov offers a fast, secure, and user-friendly solution for recovering lost files across multiple scenarios. Whether you need email recovery, ZIP File Recovery, format data recovery, or help to recover deleted drafts Outlook, the software provides reliable recovery performance for both personal and business users.

PandaOffice Drecov supports recovery from formatted hard drives, SSDs, USB drives, SD cards, and external storage devices. Its advanced scanning engine can locate deleted archives, damaged ZIP files, lost Outlook drafts, and accidentally removed documents with high accuracy. For users searching for how to find deleted messages in Teams, PandaOffice Drecov can also help recover exported chat files, attachments, and related local cache data when available.

Key advantages include:

• Deep scan technology for complex data loss situations
• Support for emails, archives, videos, photos, and office documents
• Recovery from accidental deletion, formatting, corruption, and system crashes
• Easy preview before restoring files
• Compatible with Windows and multiple storage devices

Unlike complicated enterprise recovery tools, PandaOffice Drecov keeps the recovery process simple. Users can scan, preview, and restore files in just a few steps without technical expertise.

Whether you are dealing with lost Outlook drafts, corrupted ZIP archives, formatted drives, or missing communication data, PandaOffice Drecov provides an efficient and practical recovery experience designed to minimize downtime and protect important files.

Test Environment

• Device: Seagate External HDD
• Operating System: Windows 11
• Original File System: NTFS
• Problem: RAW partition after sudden power loss

Steps to Recover Data From RAW Drives

Step 1: Connect the Storage Device

Attach the affected drive securely to the computer.

Step 2: Launch PandaOffice Drecov

Open the recovery software and select the RAW partition.

Step 3: Start Deep Scan

Choose deep scan mode to analyze the entire storage device sector by sector.

Step 4: Preview Recoverable Files

After scanning completes, preview available documents, photos, and videos.

Step 5: Export Recovered Data

Save recovered files to a separate healthy drive.

This method is highly effective before attempting repair procedures that may modify the damaged partition structure.

Repair RAW File System Using CHKDSK

Can CHKDSK Fix RAW Drives?

CHKDSK is a built-in Windows repair utility designed to repair logical file system errors. However, CHKDSK may not always function properly when Windows reports “the type of the file system is raw.”

In some cases, users see the message:

CHKDSK is not available for RAW drives.

Still, minor corruption issues may occasionally be repairable.

Test Environment

• Device: WD Portable HDD
• Operating System: Windows 10
• Problem: RAW partition after interrupted transfer

Steps to Run CHKDSK

Step 1: Open Command Prompt

Search for “cmd” and choose Run as Administrator.

Step 2: Enter Repair Command

Type:

chkdsk X: /f

Replace X with the affected drive letter.

Step 3: Wait for Repair Completion

Allow Windows to analyze the drive and repair logical errors if possible.

Step 4: Reconnect the Drive

Restart the system and reconnect the storage device afterward.

If CHKDSK cannot proceed because “the type of file system is raw,” alternative repair methods may be necessary.

Assign a New Drive Letter to the RAW Partition

Why Missing Drive Letters Cause Access Problems

Sometimes Windows fails to assign a proper drive letter after corruption occurs. Without a drive letter, the partition may appear inaccessible even if the file system itself remains partially intact.

Test Environment

• Device: Kingston USB Drive
• Operating System: Windows 11
• Problem: RAW partition missing from File Explorer

How to Assign a New Drive Letter

Step 1: Open Disk Management

Press:

Windows + X

Then choose:

Disk Management

Step 2: Locate the RAW Partition

Find the affected storage device in the disk list.

Step 3: Change Drive Letter

Right-click the partition and select:

Change Drive Letter and Paths

Assign a new available letter.

Step 4: Reconnect the Device

Restart the system and reconnect the drive.

This simple solution occasionally restores access before advanced recovery becomes necessary.

Use Diskpart to Clean the RAW Partition

When Diskpart Should Be Used

Diskpart removes damaged partition information completely. This method should only be performed after all important files are recovered.

Test Environment

• Device: Samsung External SSD
• Operating System: Windows 10
• Problem: Persistent RAW file system

Steps to Clean RAW Partitions

Step 1: Open Command Prompt

Run Command Prompt as Administrator.

Step 2: Launch Diskpart

Type:

diskpart

Step 3: Display Available Drives

Enter:

list disk

Step 4: Select the Affected Drive

Type:

select disk X

Replace X with the correct disk number.

Step 5: Clean the Partition

Run:

clean

This removes corrupted partition structures entirely.

Step 6: Recreate and Format the Partition

Initialize the drive again using Disk Management afterward.

This completes the first half of the guide explaining how to handle “the type of the file system is raw” errors safely while minimizing permanent data loss.

Format the RAW Drive After Recovering Important Files

Why Formatting Repairs RAW File Systems

Formatting rebuilds the damaged file system structure and creates a fresh partition table that Windows can recognize normally. After completing file recovery, formatting is often the fastest solution for fixing persistent RAW errors.

Users commonly choose this option after repeated warnings such as:

• “the type of the file system is raw”
• “the type of file system is raw”
• “You need to format the disk before use”

Although formatting repairs many logical corruption problems, it removes the existing file system structure entirely.

Test Environment

• Device: Toshiba External HDD
• Operating System: Windows 11
• Problem: RAW partition inaccessible in File Explorer

Steps to Format a RAW Partition

Step 1: Open Disk Management

Press:

Windows + X

Choose:

Disk Management

Step 2: Locate the RAW Drive

Find the affected partition labeled as RAW.

Step 3: Select Format

Right-click the partition and choose:

Format

Step 4: Choose File System

Select:

• NTFS for Windows systems
• exFAT for external storage compatibility

Step 5: Complete Formatting

Click Start and wait for the process to finish.

Reconnect the drive afterward to verify accessibility.

Repair RAW Drives Using File Explorer Error Checking

How Windows Error Checking Works

Windows includes a built-in error-checking feature that scans storage devices for logical inconsistencies. In mild corruption situations, this utility may restore access without requiring advanced recovery commands.

Test Environment

• Device: SanDisk USB Flash Drive
• Operating System: Windows 10
• Problem: RAW drive after unsafe removal

Steps to Run Error Checking

Step 1: Open File Explorer

Locate the affected storage device.

Step 2: Open Drive Properties

Right-click the drive and select:

Properties

Step 3: Start Error Checking

Navigate to:

Tools → Check

Windows will scan the drive automatically for file system problems.

Step 4: Restart the Computer

Reconnect the drive after the repair process completes.

This method occasionally fixes minor corruption before more advanced solutions become necessary.

Repair RAW File Systems on Mac

Why RAW Problems Also Affect macOS

RAW partition issues are not limited to Windows systems. Mac users may also encounter unreadable drives after sudden disconnections, interrupted transfers, or incompatible file systems.

macOS includes built-in repair tools that can repair some logical disk errors.

Test Environment

• Device: Lexar External SSD
• Operating System: macOS Sonoma
• Problem: External drive unreadable after crash

Repair RAW Drives Using Disk Utility

Step 1: Open Disk Utility

Go to:

Applications → Utilities → Disk Utility

Step 2: Select the Affected Drive

Choose the RAW partition from the left panel.

Step 3: Run First Aid

Click:

First Aid

The utility scans and repairs logical errors automatically.

Step 4: Verify Accessibility

Reconnect the drive and test file access afterward.

This method may restore usability if the corruption is not severe.

Rebuild RAW Partitions Using CMD Utilities

When Advanced CMD Repairs Help

Some RAW partition problems occur because of damaged boot records or corrupted partition metadata. Advanced command-line utilities can occasionally rebuild damaged structures without full formatting.

Test Environment

• Device: Crucial SSD
• Operating System: Windows 11
• Problem: RAW partition after failed update

Repair RAW File Systems Using CMD

Step 1: Launch Command Prompt

Run Command Prompt as Administrator.

Step 2: Run System File Checker

Type:

sfc /scannow

This scans Windows system files for corruption.

Step 3: Repair Disk Structures

Run:

DISM /Online /Cleanup-Image /RestoreHealth

This repairs damaged Windows image components that may interfere with storage management.

Step 4: Restart the Computer

Reconnect the affected drive after restarting the system.

Advanced repairs may help when Windows repeatedly displays “the type of this file system is raw” during startup or drive access.

Safely Remove Storage Devices

Why Unsafe Removal Causes Corruption

Removing a drive during active read or write operations may corrupt the file system immediately. Many RAW partition problems begin after users unplug storage devices too quickly.

To reduce risks:

• Always eject external drives safely
• Wait for file transfers to finish
• Avoid disconnecting devices during updates

Proper removal habits help prevent future “the type of the file system is raw” errors.

Use Stable Power Sources

Unexpected power failures frequently damage partitions and storage structures.

Helpful precautions include:

• Use surge protectors
• Avoid forced shutdowns
• Connect laptops to stable power during transfers

Sudden interruptions during large file transfers are especially dangerous for external hard drives and SSDs.

Monitor Storage Device Health

Why Aging Drives Become Unstable

Storage devices gradually wear out over time. SSDs, HDDs, and USB drives can develop bad sectors or controller failures that eventually corrupt the file system.

Common warning signs include:

• Slow transfer speeds
• Clicking noises
• Random disconnects
• Frequent repair prompts
• Missing files

Users should replace unstable drives before complete failure occurs.

Perform Regular Backups

Backups remain the best protection against RAW partition corruption.

Recommended backup methods include:

• External hard drives
• Cloud storage
• NAS systems
• Automatic synchronization tools

Professional users often follow the 3-2-1 backup strategy:

• 3 copies of data
• 2 storage types
• 1 offsite backup

This minimizes permanent data loss risks significantly.

FAQ About RAW File System Errors

What Causes “The Type of the File System Is RAW”?

This error typically appears because of:

• File system corruption
• Malware infections
• Bad sectors
• Power interruptions
• Unsafe drive removal
• Damaged partition tables

The operating system can no longer recognize the original file system correctly.

Can RAW Drives Be Fixed Without Formatting?

Yes. In some situations, users can repair RAW drives using:

• CHKDSK
• Error checking tools
• Disk Utility
• Recovery software
• Partition repair utilities

However, severe corruption may still require formatting eventually.

Can I Recover Files From a RAW Partition?

Yes. Recovery software can often restore:

• Documents
• Photos
• Videos
• ZIP archives
• Audio files
• Email databases

Recovery success depends on the drive condition and whether overwritten data exists.

Why Does CHKDSK Say “The Type of File System Is RAW”?

CHKDSK relies on a readable file system structure. If the partition becomes RAW, CHKDSK may display:

CHKDSK is not available for RAW drives.

This means Windows cannot identify the partition correctly.

Should I Continue Using a Previously Corrupted Drive?

Drives that repeatedly become RAW may have underlying hardware problems. Even after repair, unstable devices should be replaced to avoid future data loss.

Conclusion

RAW file system errors can suddenly make important files inaccessible, but recovery and repair are often possible when handled correctly. Whether users encounter “the type of the file system is raw”, “the type of file system is raw”, or “the type of this file system is raw”, the safest approach involves recovering important files before attempting major repairs.

This guide explained how to:

• Recover files from RAW partitions
• Repair corrupted storage devices
• Use CHKDSK and Diskpart safely
• Format RAW drives properly
• Prevent future file system corruption

Using proper recovery tools, safe repair methods, and regular backups can greatly reduce the risk of permanent data loss from RAW storage devices.