How to fix parameter incorrect external hard drive?

Posted by Juno to RAW Drive Data Recovery on July 26th, 2017

My external hard drive fails to work and can't be read by the PC. It does not display properly on the PC and when I try to open it, the message appears "Drive is not accessible. The parameter is incorrect". I always make sure to safely remove it and am careful not to damage it. Files in it are still useful. Is there any solution to recover files or fix the drive?

We often receive "Drive is not accessible. The parameter is incorrect" message when try to open a drive. After getting this message, the drive is not usable and files inside it can't be accessed anymore. This error usually happens on external storage devices, such as external hard drive, USB flash drive, memory card, but it may also happen on internal hard drive.

This passage will mainly focus on possible causes of parameter incorrect external hard drive, how to fix parameter incorrect external hard drive and recover data from inaccessible external hard drive.

Possible causes of parameter incorrect external hard drive

Actually, plenty of factors can lead to parameter incorrect error, including USB port problem, ejecting drive in an improper way, bad sectors, power failure, unexpected shutdown, damaged file system (DBR, MFT or FAT), virus attack.

At most of the time, "Drive is not accessible. The parameter is incorrect" error is caused by damaged file system and bad sectors. To fix this error, the inaccessible external hard drive must be formatted. But if we directly do that, we will lose files inside the drive.

Two steps to fix parameter incorrect external hard drive

As most of us may not have the habit of backing up files, we should carry out data recovery before fixing the inaccessible external hard drive if we have any useful file inside that drive.

As long as the inaccessible external hard drive doesn't have hardware problem, iBoysoft Data Recovery can be a good assistant to get our lost data back.

Step 1: Recover data from inaccessible external hard drive with iBoysoft Data Recovery

iBoysoft Data Recovery is a reliable & free data recovery software that can recover data from inaccessible external hard drive, inaccessible hard drive, inaccessible USB flash drive, inaccessible memory card, recover data from RAW external hard drive, corrupted external hard drive, unrecognized external hard drive, recover files deleted or lost from external hard drive, recover data from deleted or lost partition, etc. on Window 10/8/7/XP and Windows Server 2016/2012/2008/2003.

Download iBoysoft Data Recovery

Tutorial: Recover data from inaccessible external hard drive with iBoysoft Data Recovery

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

2. Connect the inaccessible external hard drive to the PC, and then launch iBoysoft Data Recovery.

Parameter incorrect external hard drive

3. Select the inaccessible external hard drive and click "Next" to search for all lost files on it.

4. Preview the listed searching results, choose those we need, and click "Recover" button to get them back.

5. Go over to ensure we have restored all needed data.

Step 2: Fix parameter incorrect external hard drive by formatting

After successfully retrieving data from inaccessible external hard drive, we can fix parameter incorrect external hard drive by formatting. The drive can be formatted by right click to choose "Format" or go to Disk Management. If both the two methods failed, we can seek help from any third-party format tool. The parameter incorrect external hard drive will be fixed after format completes.

Still have questions?

Related Data Recovery Tips

30 Days Money Back Guarantee

Transactions Protected

High success rate of recovery

7 X 24 Customer Service