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

Tracy King updated on Jul 12, 2019 to Storage Media Recovery | How-to Articles


Do you know how to fix 'RAW' error on your SD card, USB or hard drive when the CHKDSK is not working for repairing RAW file system issue on your Windows PC? This tutorial article will guide you to recover RAW drive data with EaseUS Data Recovery Wizard, and successfully resolve the 'CHKDSK is not available for RAW drive/USB/SD card' 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 best hard drive data recovery software - EaseUS Data Recovery Wizard. 

This software supports to deep scan and find 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 download and install this software, and follow the tips here below to get data out of RAW storage drive now.

Step 1. Select the Partition

  • Launch EaseUS Data Recovery Wizard.
  • Select the raw disk partition where you lost your data.
select the wanted partition

Step 2. Scan the Partition

  • Click the "Scan" button, and the software will automatically scan the Raw partition immediately.
scan the lost partition to find desired data

Step 3. Recover the Data

  • After the scan, you are allowed to preview some of the listed files.
  • You can preview them. If you find it difficult to find the raw files, click the "Extra Files" button and you will be able to see the raw data. Besides, you can search the file type to find the lost files.
  • Then, click the "Recover" button to get the data back.
select the wanted partition
Do You Need Specialized Data Recovery Services?
You may need further help for tough data loss situations like reformatting drive, RAW disk, partition loss, repartition failures and system boot error. Consult with EaseUS Data Recovery Experts for cost-efficient one-on-one manual recovery service. They could offer the following services after FREE diagnosis:
1. Unformat the drive
2. Repair the RAID, RAW disk or operating system
3. Recover lost partition (the one that cannot be recovered by software)

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. 

To check and repair hard disk errors:


Step 1: Insert your SD card into your computer or connect your USB/external hard drive to your computer and run EaseUS Partition Master. Right-click the partition on your storage device and choose "Check File System".

Check Error on SD Card/USB/External Hard Drive - Step 1

Step 2: In the new window, keep the option "Try to fix the errors if found" selected and click "Start".

Check Error on SD Card/USB/External Hard Drive - Step 2

Step 3: Then EaseUS Partition Master will automatically check the file system error on your SD card, USB, or external hard drive. When it has done, click "Finish" to end the whole process.

Check Error on SD Card/USB/External Hard Drive - Step 3

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.


100% of people found this article helpful.


Frequently Asked Questions

1. Why cannot I recover 2GB data for free?

It is recommended to check the version installed is Free or Trial because they are different versions.

Trial has data preview function but cannot save any files, while the Free version enables to recover 2 GB files. The default free space is 500 MB and you may share the product on social media to get another 1.5 GB.

2. Why cannot the recovered files be opened?

A file is saved as 2 parts on the storage device: directory info (which is comprised by file name, time stamp and size info, etc.) and data content.

If the files with original file names and folder structures cannot be opened, one possible reason is the corrupted directory info. There is still a chance to recover the data content with the RAW Recovery method in our software.

3. Why isn't it suggested to recover the files back to the original drive?

The storage structure of the lost files would be altered or damaged by any changes on the drive. If you save the recovered files back to the same drive, the original data structures and data content would be corrupted or overwritten, which causes permanent data loss. So you should prepare another disk to save the files.

4. How can I check whether my data is recoverable or not before purchase?

The Free version helps you save 2GB files to better verify the recovery quality of our product before purchase.

5. How long does it take to scan the drive?

It strongly depends on the capacity of your hard drive and the performance of your computer. As reference,most drive recoveries can be completed in around 10 to 12 hours for a 1-TB healthy hard drive in general conditions.

About Data Recovery Wizard

It's super easy to recover 250+ types of files after deletion, disk formatting and virus infection. Click the links and compare the difference of each version.