How to fix/repair "CHKDSK is not available for RAW drives" error?

CHKDSK command doesn't always work when you use it to scan and fix the file system problems. Check this article to see what you can do.

Posted by Juno to Data Recovery on July 20th, 2017

My external hard drive suddenly became inaccessible. When I tried to open it, I got a message "The drive is not formatted. Do you want to format it now?" After that, I ran CHKDSK hoping to repair it by myself. But an error message pops up "The type of the file system is RAW. "CHKDSK is not available for RAW drives." I have saved lots of important photos and working files on the drive. Is there any way to fix "CHKDSK is not available for RAW drives" error and get my lost data back?

If you are annoyed by getting "The type of file system is RAW. CHKDSK is not available for RAW drives" error for SD cards, USB drives and other external drives, there is no need to be panic. This article will tell you why CHKDSK reports RAW file system error, and also offer you solutions to fix/repair "CHKDSK is not available for RAW drives" error and recover data from RAW drive with the best data recovery software - iBoysoft Data Recovery for free.

Why CHKDSK reports "CHKDSK is not available for RAW drives"?

A drive becomes RAW when its file system goes wrong or can't be recognized by the Operating System. Under that condition, data on the drive is not accessible. If the drive is severely damaged or corrupted, it's impossible to fix using CHKDSK and you will be told that "CHKDSK is not available for RAW drives" on Windows 10/8/7.

The reasons why a drive becoming RAW vary greatly, such as corrupted or damaged file system, unsafe ejection, sudden power failure, unexpected shutdown, bad sectors, virus infection.

Two steps to fix/repair "CHKDSK is not available for RAW drives" error

As CHKDSK can't repair RAW drive, the only method you can apply is to format the RAW drive by assign a new file system to it. But if you have useful data on the RAW drive, the first priority is to recover data from RAW drive.

Step 1: Recover data from RAW drive with data recovery software

iBoysoft Data Recovery is the best free data recovery software that can help you to recover data from RAW hard drive, RAW external hard drive, RAW USB drive, RAW SD card, RAW memory card without losing data. It can also recover deleted files even if emptied from Recycle Bin, recover data from formatted, inaccessible, corrupted drive, recover data from deleted or lost partition, etc. on Windows 10/8/7/Vista/XP and Windows Server 2019/2016/2012/2008/2003.

Follow the steps below to recover data from RAW drive with iBoysoft Data Recovery:

1. Download and install iBoysoft Data Recovery on the PC.

2. Connect your RAW drive to the PC, and then launch iBoysoft Data Recovery.

3. Select the RAW drive where you want to recover data, and click "Next" to start scanning for lost files.

Recover data with iBoysoft Data Recovery

4. Preview the scanning results, choose the lost files and click "Recover" to get them back.

5. Go over to ensure all lost files have been successfully restored.

Step 2: Fix/repair "CHKDSK is not available for RAW drives" error by formatting

After successfully restoring lost files, you can fix "CHKDSK is not available for RAW drives" error by formatting. You can convert RAW to FAT32, exFAT, convert RAW to NTFS without data loss in Disk Management, in File explorer or any third-party formatting tool. On top of that, you can also use DiskPart utility on Windows to fix the RAW drives. This error will be fixed after formatting completed.

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