How to Fix 'The Parameter is Incorrect' Error on a BitLocker Drive in Windows 11/10/8/7

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 error "Drive is not accessible. The parameter is incorrect." usually occurs when accessing external hard drives, USB flash drives, or SD memory cards. This issue is usually caused by file system corruption, disk errors, or bad sectors. If you encounter this problem, first try connecting the drive to another computer. If the issue persists, follow the steps below to fix "Drive is not accessible. The parameter is incorrect" on a BitLocker drive in Windows 11/10/8/7.

Frist: Recover Data from an Inaccessible BitLocker-Encrypted Drive Using Hasleo Data Recovery

Step 1: Choose BitLocker Data Recovery

Download, install, and run Hasleo Data Recovery. On the main interface, you'll see several recovery options. Please select BitLocker Data Recovery mode.

Step 2: Select the drive to Scan

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

2. A pop-up window will appear asking you to enter the BitLocker password or 48-digit BitLocker recovery key. If you don't want to enter the password or BitLocker recovery key here, just click the "Skip" button to skip it.

3. Hasleo Data Recovery will display all detected BitLocker-encrypted partitions on the target device. If you provided the password or BitLocker recovery key in the previous step, the password status will show whether they match the partition.

4. Double-click the partition you want to recover data from. If you've already entered the password or BitLocker recovery key and the password or recovery key matches, Hasleo Data Recovery will start scanning lost files. Otherwise, a prompt will appear asking for your BitLocker password or 48-digit recovery key. After entering the correct credentials and clicking "OK", the scan will start.

Step 3: Preview and Recover Deleted Files

After scanning, the software will display a list of found files. You can preview them by browsing their paths or types. Select the files you wish to recover, then click the "Recover" button to save them to a destination of your choice. If your desired files are not found, click "Deep Scan" to initiate the Deep Scan Recovery process. This process takes additional time but can recover many more lost files.

Important Notes:

1. You must enter the correct Bitlocker password or the 48-digit Bitlocker recovery key to successfully recover data from a BitLocker-encrypted drive.
2. If the metadata area of a BitLocker-encrypted drive is severely corrupted, data recovery from that partition may fail—even with the correct password or recovery key.
3. Do not save recovered files to the original partition where the lost data was stored. This prevents the data from being overwritten.
4. You can export or save the scan results for later use or future recovery sessions.

 

Second: Fix 'Drive Is Not Accessible. The Parameter Is Incorrect' by Reformatting the Inaccessible Bitlocker Encrypted Drive

After successfully recovering all your lost data from the inaccessible BitLocker-encrypted drive, you can format the device using Windows Disk Management or a third-party partitioning tool. This will permanently resolve the "Drive is not accessible. The parameter is incorrect." error message.

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

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

Step 3: Specify the formatting parameters for the partition, then click the Start button to format the inaccessible BitLocker-encrypted drive.