Knowledge - Mistaked to delete file
Position: Home > Mistaked to delete file > Fix Corrupted USB Flash Drive With CHKDSK Command

Top 10 Articles:
New Knowledge:
Featured Articles:
  • How to Fix "External Hard Drive Not Showing Up on Mac"

    Summary:When we plug external hard drive in a Mac OS computer, it suddenly fails to show up. How can we fix "USB flash drive not showing up" issue on Mac and how to recover lost data on your Mac if your Mac can read the external hard drive but unabl

  • How to unlock iPhone 6 for use without losing data

    Summary:Summary: Forgot your passwords of iPhone 6? Here you can learn how to unlock iPhone 6 for use without losing data. Just follow to unlock/enable disabled iPhone and get all data back now. In general, if your iPhone 6 is locked, you can use a

  • How to recover deleted files on android without computer

    Summary:How to recover deleted files on android without computer? Such as messages, photos and videos, etc. Bitwar has developed an Android OS based APP that allows you to recover files on Android phone without computer.

  • Free Data Recovery Software to Recover Deleted Files

    Summary:This article describes a free data recovery software named Bitwar Data Recovery to recover deleted files.

  • Do You Need Install Antivirus for Mac OS?

    Summary:Usually, we often hear that Mac claims that it will not be infected with a virus, and that there is no reason for installing any antivirus for Mac OS. Is that true?

  • Best Premium file recovery software for Mac

    Summary:Do you need to recover deleted files in Mac OS X, such as critical business documents, music, photos or videos?Here I strongly recommend you a Best Premium file recovery software for Mac - Bitwar Data Recovery for Mac which can pick up your

  • How to recover formatted files from a formatted USB drive

    Summary:A USB flash drive, also variously known as a thumb drive, pen drive, jump drive, key drive, flash-drive, memory stick or USB memory, is a small and portable flash memory card that is used to store photos, videos, music and documents. It is c

  • Free download SD Card data recovery software to recover lost

    Summary:SD Card is a common storage device to store pictures, documents, messages etc.But unfortunately,various factors such as accidental deletion, formatting, SD card corruption, virus attack, etc often occurs unexpectedly. Bitware Data Recovery Software so


Fix Corrupted USB Flash Drive With CHKDSK Command


CMD is not always available in fixing a corrupted USB flash drive, CHKDSK should be applied in such condition. But you must restore the data in advance.

What is CHKDSK?

CHKDSK is the short of "check disk", it is a basic Windows utility that scans a hard disk, USB / external drive for errors and can fix file system errors for free and repair or recover data on the drive if necessary.

Features of Windows CHKDSK

  • scans/fixes NTFS/FAT drive errors
  • marks bad sectors (physically damaged blocks)
  • scans other memory devices (USB sticks, SSD external drives and SD cards) for errors
You can run Check Disk from a command prompt or within other tools.
The complete syntax for Check Disk is as follows: 
CHKDSK [volume[[path]filename]] [/F] [/V] [/R] [/X] [/I] [/C] [/L[:size]]

The options and switches for Check Disk are used as follows: 

volume Sets the volume to work with 
path/filename Specifies files to check for fragmentation (FAT16 and FAT32 only) 
/F Fixes errors on the disk 
/V Displays the full path and name of every file on the disk (FAT16 and FAT32); displays cleanup messages if any (NTFS) 
/R Locates bad sectors and recovers readable information (implies /F) 
/X Forces the volume to dismount first if necessary (implies /F) 
/I Performs a minimum check of index entries (NTFS only) 
/C Skips checking of cycles within the folder structure (NTFS only) 
/L:size Sets the log file size (NTFS only) 
/B Re-evaluates bad clusters on the volume (NTFS only; implies /R) 

How to recover files before running CHKDSK

When your USB drive is corrupted, you'd better recover data from the corrupted USB flash drive first. So you need a professional data recovery software which can help you retrieve data from a corrupt or formatted hard drive. Bitwar Data Recovery is the powerful data recovery software which can help you easily recover deleted data from the emptied Recycle Bin, digital cameras, memory cards, CF cards, SD cards, USB flash drives and external hard drives, and etc. It can be applied in various data loss situations. For example, system crash, hard drive formatting, virus attack, partition loss and other unknown reasons in Windows. Anyway, when you suffer from data loss issues, you can download the Bitwar Data Recovery softwaree to help you.

Steps to recover lost files

Free download Bitwar Data Recovery Software on the computer by clicking the download icon below and then install it to a normal partition. Then connect the corrupted USB flash drive to the computer.

 Bitwar Data Recovery for Windows download Bitwar Data Recovery for Mac download
Step 1: Launch Bitwar Data Recovery software on your computer and select the corrupted USB flash drive on the program then click "Next".

Step 2: There are three modes on this step to scan data out, you can choose "Quick Scan" mode first. If you cannot find files with this model, try Deep Scan again. The deep scan will search every sector of the disk to find all existing files.

Step 3: Select the file types, if you have no idea about the type of deleted files, choose "Select All Types". Then click "Next" to start scanning.

Step 4: After the scan, filter the scanned files by file name, type, path and time on this step. Then double-click the file which you want to preview to make a selection.
After determined, click the "Recover" button to save it to the hard drive or other normal external device.

You can fix/repair corrupted USB flash drive by using CHKDSK command after finishing the process of data recovery.

Fix corrupted USB flash drive by using CHKDSK command

CHKDSK command will scan and repair both logical errors and bad sectors. If it successfully fixes corrupted USB flash drive, your USB flash drive can be usable again.
Step 1: Plug your USB flash drive to your computer.
Step 2: Go to the start menu, type in "cmd" in a search bar, hit enter and then you can see something named "cmd. exe" under a list of programs.
Step 3: Right click "cmd. exe" and select "Run as Administer".
Step 4: In command window, type in "chkdsk /X /f USB flash drive letter:" or "chkdsk USB flash drive letter: /f ", for example, "chkdsk /X /f G:" or "chkdsk G: /f" to start to repair damaged USB flash drive.

Remember following tips before applying CHKDSK:

1. CHKDSK can only check and repair logical disk errors in the file system
2. CHKDSK can't check network drives
3. It marks found bad sectors as 'bad'. This helps Windows understand not to store data at bad sectors to avoid data loss.
4. Do not use parameters with CHKDSK if you don't know how parameters work.
5. Close all files, programs, and folders before running CHKDSK utility. If you don't follow this rule, you may lose data or damage your hard drive file system.


CHKDSK is a useful utility whicht can help you keep your hard drive healthy and detect issues before it fails. However, if you face any data loss situation during the process, you can use Bitwar Data Recovery to restore deleted/formatted/lost data from a hard drive or external storage drive.

Bitwar Data Recovery for Windows download Bitwar Data Recovery for Mac download

This article is original, reproduce the article should indicate the source URL:
Keywords:Fix Corrupted USB Flash Drive