How to Fix 'Drive is not accessible. The parameter is incorrect' on BitLocker drive in Windows 10/8/7?

2018-5-12, Posted by Jerry to BitLocker Data Recovery

I have one data drive on an external hard disk that is Bitlocker protected and it has always worked fine. Today, when I try to open this partition again, I get "I:\ is not accessible, the parameter is incorrect" error. Can anyone suggest a way to fix 'Drive is not accessible. The parameter is incorrect' on BitLocker encrypted drive?

The parameter is incorrect


The error "Drive is not accessible. The parameter is incorrect." usually occurs when you try to access the external hard drive, USB flash drive or SD memory card, etc, and the issue is usually due to file system corruption & disk errors, corruptions and bad sectors. If you are experiencing the same issue, first we recommend that you pull out the drive and try it on another computer. If the issue still cannot be solved, please follow the steps bellow to Fix 'Drive is not accessible. The parameter is incorrect' on BitLocker drive in Windows 10/8/7.

Step 1: Recover data from inccessible Bitlocker encrypted drive with Hasleo Data Recovery?

Step 1: Choose BitLocker Data Recovery

Download, install and run Hasleo Data Recovery. And you will see a screen with many options of recovery. Please select BitLocker Data Recovery mode.

select bitlocker data recovery mode


Step 2: Select the drive to Scan

1. Please select the drive where you lose your files, then click "Scan" button to find all BitLocker encrypted partitions on the device.

select drive to scan bitlocker partition


2. Hasleo Data Recovery will list all found BitLocker encrypted partitions on the target device.

select bitlocker encrypted partition


3. Double click the BitLocker encrypted partition you want to recovery data from, a pop-up window will appear asking you to enter the BitLocker password or BitLocker recovery key. Enter the password or recovery key and then click "OK" button, if the password or key matches, Hasleo Data Recovery will start scanning lost files.

enter bitlocker password


Step 3: Preview and Recover Deleted Files

There will be a list of files found by the software, you can preview found files by path and types. Select the files you want to recover and click "Recover" button to save them. If some files are not found, please click "Deep Scan" button to start the Deep Scan Recovery process, deep scan takes more time, but can find much more lost files

preview lost files


Please note that:
1. Bitlocker metadata must be intact: Bitlocker metadata was used to store the password and 48-digits recovery key when encrypting the drive with Bitlocker. In some situations, Bitlocker metadata has been corrupted so that lost data cannot be recovered even if you have correct password or recovery key.
2. Have correct password or 48-digits recovery key: The password or 48-digits recovery key is used to decrypt data from Bitlocker encrypted drive after the password or 48-digits recovery key you enter matches the password or 48-digits recovery key stored in Bitlocker metadata.
3. Don't save the recovered files to the partition where your lost files originally located. This prevents your data from geting overwriten.


Step 2: Fix 'Drive is not accessible. The parameter is incorrect.' by reformatting the inccessible Bitlocker encrypted drive?

After you successfully recover all of your lost data from the inccessible Bitlocker encrypted drive, then you can format the device by using Windows Disk Management or third party partitioning tool to permanently remove "Drive is not accessible. The parameter is incorrect.' error message.

Step 1: Right click the RAW drive in Windows Explorer or Windows Disk Management.

Step 2: Select "Format..." from right-click menu.

Step 3: Enter the partition formatting parameters, then click Start button to format the inccessible Bitlocker encrypted drive.