Option 1: Remove Previous Encryption Product

  1. Decrypt the disk using the defined method as provided by the software vendor.
  2. Uninstall the previously installed vendor’s software (or verify BitLocker is disabled).
  3. Reboot the device.
  4. Run chkdsk and defragment the drive.
  5. Check each device for a Normal Master Boot Record (MBR) and confirm that a Normal Boot Sector is present on the boot partition.

    The device cannot be a dual-boot machine.

  6. Back up user files.
  7. Install Full Disk Encryption. For more information, see Full Disk Encryption Deployment.