WHY CHKDSK WON’T WORK ON RAW DRIVES AND WHAT TO DO INSTEAD

CHKDSK refuses to run on RAW drives because Windows can’t read the file system. No file system means no metadata for CHKDSK to repair. Stop trying to force it—you’ll waste time and risk data loss. This guide gives you the exact steps to recover or rebuild the drive instead.

UNDERSTAND THE RAW PROBLEM IN 30 SECONDS

A RAW drive shows 0 bytes used, 0 bytes free, and throws “The volume does not contain a recognized file system” when you try to open it. Windows Disk Management labels it “RAW” instead of NTFS, FAT32, or exFAT. CHKDSK needs a valid file system header to start; RAW drives have none. Move on.

TOOL SELECTION RULES—NO GUESSWORK

Rule 1: If the drive spins and is detected in BIOS, use data recovery software first.

Rule 2: If the drive clicks, beeps, or isn’t detected, stop and send it to a professional lab.

Rule 3: If the drive is an SSD and shows RAW after a power loss, try manufacturer tools before recovery software.

DATA RECOVERY SOFTWARE—PICK ONE AND RUN IT

Use these tools in order. Stop when you get your files back.

1. DMDE (Free version)

– Download the portable version.

– Select the RAW drive, click “Full Scan”.

– Set scan type to “NTFS” or “FAT32” based on what the drive was before it went RAW.

– Let it run—expect 1-3 hours for a 1TB drive.

– After scan, open the “Found Files” folder, sort by size, and recover the largest files first to verify success.

2. R-Studio (Paid, $80)

– Open R-Studio, select the RAW drive.

– Click “Scan”, set file system to “NTFS” or “FAT32”.

– Enable “Extra Search for Known File Types” for better recovery of photos and documents.

– Scan takes 2-4 hours for 1TB.

– After scan, use the “Find” function to search for specific file names or extensions.

3. TestDisk (Free, command-line)

– Open TestDisk, select the RAW drive.

– Choose “Analyse”, then “Quick Search”.

– If Quick Search fails, run “Deeper Search”.

– TestDisk rebuilds the partition table—write changes only if you see your files listed.

– If TestDisk finds nothing, the drive may be physically damaged.

FILE RECOVERY THRESHOLDS—WHEN TO STOP

– If recovery software finds less than 30% of your expected files, the drive is likely failing.

– If the scan takes more than 6 hours for a 1TB drive, cancel it—something is wrong.

– If files recover but won’t open, the drive has bad sectors or corruption beyond software repair.

REBUILD THE FILE SYSTEM—ONLY IF YOU DON’T NEED THE DATA

If you don’t care about the data, reformat the drive. This is the fastest fix but erases everything.

1. Open Command Prompt as Administrator.

2. Type “diskpart” and press Enter.

3. Type “list disk” and identify your RAW drive by size.

4. Type “select disk X” (replace X with your drive number).

5. Type “clean” to wipe the drive.

6. Type “create partition primary”.

7. Type “format fs=ntfs quick” (or fat32 if needed).

8. Type “assign” to give it a drive letter.

This takes 5 minutes. The drive will be usable again but empty.

PHYSICAL DAMAGE CHECKLIST—DON’T WASTE TIME ON DEAD DRIVES

– Listen for clicking, beeping, or grinding noises. If present, stop using the drive.

– Check if the drive is detected in BIOS. If not, software won’t help.

– Look for burn marks or unusual smells. If found, power off immediately.

– If the drive is an SSD and shows RAW after a firmware update, contact the manufacturer.

SSD-SPECIFIC FIXES—MANUFACTURER TOOLS FIRST

SSDs often go RAW due to firmware corruption or power loss. Use these tools before recovery software:

1. Samsung Magician (for Samsung SSDs)

– Open Magician, select the RAW drive.

– Click “Diagnostic Scan” to check for firmware issues.

– If firmware is outdated, update it.

– If the drive is still RAW, use “Secure Erase” to reset it (erases data).

2. Intel SSD Toolbox (for Intel SSDs)

– Open Toolbox, select the RAW drive.

– Run “Full Diagnostic Scan”.

– If the drive is healthy, use “Secure Erase” to reformat it.

3. Crucial Storage Executive (for Crucial SSDs)

– Open Storage Executive, select the RAW drive.

– Click “Update Firmware” if available.

– Use “Sanitize Drive” to reset it (erases data).

If manufacturer tools don’t fix the SSD, use data recovery software as a last resort.

HDD-SPECIFIFIC FIXES—BAD SECTORS AND CLONING

If the RAW drive is an HDD and has bad sectors, clone it before recovery:

1. Download HDDSuperClone (Free).

2. Connect the RAW drive and a healthy drive of equal or larger size.

3. Open HDDSuperClone, select the RAW drive as source and the healthy drive as target.

4. Set clone mode to “Read Retry” and “Skip Bad Sectors”.

5. Start cloning—expect 4-8 hours for a 1TB drive.

6. After cloning, use data recovery software on the cloned drive.

If HDDSuperClone fails, the drive is too damaged for DIY recovery.

PARTITION TABLE REBUILD—TESTDISK STEP-BY-STEP

If the drive was accidentally repartitioned or the partition table is corrupted, TestDisk can rebuild it:

1. Open TestDisk, select the RAW drive, press Enter.

2. Choose “Intel” for MBR or “EFI GPT” for GPT drives.

3. Select “Analyse” and press Enter.

4. Choose “Quick Search” and press Enter.

5. If TestDisk finds a partition, press “P” to list files.

6. If files are listed, press “Enter”, then “Write” to save the partition table.

7. Reboot and check if the drive is accessible.

If Quick Search fails, run “Deeper Search”. If that fails, the partition table is too damaged.

WHEN TO SEND IT TO A PRO—DOLLAR THRESHOLDS

– If the data is worth more than $500, send it to a professional lab.

– If the CHKDSK is not available for RAW drives is under warranty, contact the manufacturer first—they may recover data for free.

– If the drive is encrypted (BitLocker, FileVault), stop DIY recovery—