Fix CHKDSK Is Not Available for RAW Drive/USB/SD Card

Here this page shows you how to restore the hard drive, USB, or SD card from 'RAW' error without losing any data. If you received 'The type of the file system is RAW. CHKDSK is not available for RAW drives' error messages, just follow this page and fix this issue on Windows 10/8/7 with ease.

 Download for Win Recovery Rate 99.7%
 Download for Mac Trustpilot Rating 4.7

Page Table of Contents

Updated By


Written By

Tracy King

Updated on

16 May 2024

Min Reading

9 Min

Two Methods to Fix/Repair 'CHKDSK Is Not Available for RAW Drive/USB/SD' Error:

CHKDSK is not available for the RAW drive, USB or SD card, how to fix?

"My USB flash drive suddenly showed as not formatted on my computer the other day. The Windows system reminded me that the ‘CHKDSK is not available for RAW drives’ while I was trying to run CHKDSK command to fix the RAW file system error on my USB drive in Windows 10. 

I couldn’t directly format the USB drive since I’ve got many useful files saved on the drive. So I want to know is there a way that can help me convert the RAW USB drive to NTFS without losing any data when the CHKDSK is not available?"

chkdsk is not available for raw drives

Usually, when the USB or other storage devices become RAW, the direct solution is to format the device directly. To achieve the goal, CHKDSK command is an ideal solution. But now the CHKDSK is not working along with the error, what else can you do to resolve this problem? Just follow the tutorial steps here below to restore your data from the RAW device and change the file system from RAW to a proper file system, such as NTFS/FAT32...

The most recommended safe way to fix a RAW drive should be: [step 1] Recover RAW drive data; [step 2] check and repair RAW drives with other error checking tools; [3] Reformat the RAW drive to remove CHKDSK not available error.

1. Restore Data from RAW Drive/USB/SD Card

To restore data from the RAW storage device like USB, SD card, etc. you’ll need the help of the best EaseUS Data Recovery Wizard - EaseUS Data Recovery Wizard. 

This software supports deep scans and finds all existing and lost data on RAW USB, SD card, or even hard drive with simple clicks on Windows 10/8/7. You can just free download and install this software, and follow the tips here below to get data out of the RAW storage drive now.

 Download for Win Recovery Rate 99.7%
 Download for Mac Trustpilot Rating 4.7

Step 1. Select and scan the RAW partition

If the RAW partition contains a partition label, you can directly select it from drives list and click "Search for Lost Data" to look for the lost files. If the RAW partition lost its label, it will be recognized as "Lost Partition", just select the "Lost Partition" and initiate an overall scan on the RAW drive.

select RAW partition and click scan

Step 2. Preview found data from the scan result

After the scan is completed, all available files in the RAW hard drive will be displayed. View these files and find the files you want to recover. You can sort the scanned data by file format or search directly in the "Search files or folders" box. 

scan the lost partition to find desired data

Step 3. Recover data from RAW partition

Select all files and click "Recover" to get all the data back. Select another internal/external hard drive or Cloud drive to save the recovered data and click "OK" to start RAW drive recovery.

recover all found data from RAW partition

Video Tutorial Guide

If the data recovery software failed to restore RAW files, you still have a good chance of retrieving the data by using EaseUS RAW recovery services.

Consult with EaseUS data recovery experts for one-on-one manual RAW recovery service. We could offer the following services after FREE diagnosis:

  • Repair damaged RAW drive without formatting
  • Recover data from the RAW drive, including BitLocker encrypted drives
  • Recover RAW partition, RAW USB, RAW flash drive, RAW external hard drive, etc.

2. Fix/Repair 'CHKDSK Is Not Available for RAW Drive/USB/SD' Error

After restoring data from the RAW USB/SD card, you can now find methods here to repair and fix the ‘CHKDSK is not available’ error now.

Method 1. Run Disk Error Checking to fix the CHKDSK not available error

Step 1: Open Windows Explorer and right-click on the RAW USB or SD card, select 'Properties'.

Step 2: Click the 'Tools' tab and select Check under Error checking.

Step 3: Click Scan drive to start run Disk Error Checking and fix the CHKDSK not available error.

Check and repair disk error that cause RAW error on USB/SD card.

Just wait for the process to complete and you should be able to access your USB or SD card by then.

Method 2. Fix CHKDSK not available issue with CHKDSK alternative tool 

The other efficient way to fix the CHKDSK not available error is to apply a CHKDSK alternative tool for help. Here we’d like to recommend you try EaseUS Partition Master which will effectively help you remove the CHKDSK is not working error from your storage device on Windows 10/8/7.

It will directly help you repair bad sectors and fix corrupted file system on your USB, SD card with its check partition feature by simple clicks.

Format and reset the RAW drive/USB/SD file system to NTFS

After removing the bad sectors and repairing the corrupted file system from RAW drive or USB, you can then follow the guidelines below to format and reset the RAW USB/SD card file system to NTFS.

Step 1: Connect the RAW USB/SD card/external hard drive to your PC.

Step 2: Open Windows Explorer and right-click on the RAW drive, select Format.

Step 3:  Reset the file system to NTFS or FAT32, then click OK to confirm the operation.

format raw drives, usb and sd cards in windows explorer

Wait for the process to complete and then you'll be able to use the USB, SD card, or external hard drive to save data again.

  • Updated by

    Dany is an editor of EaseUS who lives and works in Chengdu, China. She focuses on writing articles about data recovery on Mac devices and PCs. She is devoted to improving her writing skills and enriching her professional knowledge. Dany also enjoys reading detective novels in her spare time. …
  • Written by

    Tracy became a member of the EaseUS content team in 2013. Being a technical writer for over 10 years, she is enthusiastic about sharing tips to assist readers in resolving complex issues in disk management, file transfer, PC & Mac performance optimization, etc., like an expert.…
Why Trust EaseUSEditor Reviews


Years of experience


Countries and regions

72 Million+


4.7 +

Trustpilot Score

Data Recovery Service