Encrypt EBS (Elastic Block Storage)

1. Shutdown the instance.
2. Create a snapshot of the volume.
3. Right click the snapshot and select “Copy”. Tick “Encrypt this snapshot”.
4. Right click the new snapshot and select “Create Volume”.
5. Check the root device path (e.g. /dev/xvda) of the instance.
6. Detach the old volume.
7. Attach the new volume and enter the root device path.