Fix The Parameter is Incorrect on External Hard Drive in Windows 10/8/7

Abby Haines updated on Dec 27, 2018 to Storage Media Recovery | How-to Articles


Did you get 'The parameter is incorrect' error message and cannot access your external hard drive, USB drive or SD memory card? Here are some useful instructions to teach you how to fix the issue and recover your data in Windows 10/8/7.

'The parameter is incorrect' is an error that usually occurs in Windows 10/8/7 and prevents you from opening the device and accessing your data. It usually attacks an external hard drive, USB flash drive or SD memory card with the message: 'Location is not accessible, the parameter is incorrect'. 

'The parameter is incorrect' error on external hard drive or USB drive

When facing such a situation, fixing the 'Drive Is Not Accessible. The Parameter Is Incorrect' error without losing data becomes a problem. If you don't know how to get started, here are some useful instructions and tutorials that will teach you how to recover data from an external hard drive, USB or memory card might help. 

How to fix "The parameter is incorrect" in Windows 10/8/7  

'The parameter is incorrect' error usually happens and makes your device inaccessible because of file system corruption & disk errors, corruptions and bad sectors. Figuring out all the possible reasons will help you a lot to fix the issue, recover your data and repair USB drives, external hard drives or memory cards for reuse.

Method 1. Run the CHKDSK command prompt to fix "The parameter is incorrect" error

1. Plug in your external hard drive, USB drive or memory card to PC.

2. Open Command Prompt.

  • In Windows 7, Click Start, type in "cmd" in a search box, hit Enter and then click "cmd. exe" in the list of programs.
  • In Windows 10/8, press the Windows Key + X button and select the Command Prompt (Admin) option.

3. In the new Command Prompt window, type chkdsk E: /f /r. Here you should replace E with the drive letter of your external hard drive or USB device.

This operation will run CHKDSK to check and repair file system corruption, errors, corruptions or bad sectors on the external hard drive or USB disk which might cause 'Drive Is Not Accessible. The Parameter Is Incorrect' error.

Method 2. Recover data and reformat the external hard drive or USB drive 

If CHKDSK cannot help, then you have the last choice - to perform a high-level formatting, also called quick format in Windows to fix "The parameter is incorrect" error. 

Connect the inaccessible disk to your PC, right-click and select "Format". ... Then click "OK" and the formatting will be done quickly. This operation will create a new file system for the volume and repair all the possible errors or corruptions on it.

And to protect your data, you should first try to recover your files with EaseUS disk data recovery. Here's the guide.

To recover data after fixing "The parameter is incorrect" error:

Step 1. Choose the external hard drive

Since you're going to recover data from the external hard drive, run EaseUS Data Recovery Wizard and under the External Devices tab, choose the exact drive where you lost data. Click Scan.

select external hard drive

Step 2. Scan for lost data

The software will start immediately to scan all over the selected drive for all lost data. During the scan, you could see more and more data showing up in the results.

scan external hard drive

Step 3. Preview and recover data

After the scan is over, check the scan results for the desired data. You can preview the file by double-clicking on it. Click Recover and choose another location to save the recovered data.

preview and recover data

After retrieving all your data from the external hard drive, USB drive or other memory storage devices, you can try to format the device using disk management tool to permanently remove "The parameter is incorrect' error message.


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Frequently Asked Qusetions

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

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