Even if the used hard drive is formatted, someone could still gain access to encrypted content on it if you use the “Used Disk Space Encryption” method.įor used external hard drives, the perfect encryption method would be “Full Disk Encryption.” This will encrypt everything on the external hard drive, including even the bad and deleted sectors of the hard drive. It would be best to stay away from this encryption method if you encrypt a previously used external drive. That encrypted data becomes available only when the password to access the external hard drive is entered correctly.
If you are encrypting a hard drive that you have never used before on another computer, then the best method to choose would be “Used Disk Space Encryption.” This will encrypt a specific sector on the drive that will ensure that whenever new data is written onto the drive, it gets automatically encrypted. One is Used Disk Space Encryption, and the other one is Full Disk Encryption. Two encryption methods are available with Bitlocker. You will have to choose the encryption method you want for this password protection encryption of your external hard drive. Finally, once you have saved your recovery key file, click on the Next button.
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