I am using one of these with my MacBook Pro running El Capitan. So when I insert it in the USB port it asks for a password. As my laptop is getting on in age, I am wondering what would happen if it suddenly went caput. Is the encryption password stored on the flash drive, so that I could use it on another Mac, or is it on the laptop's operating system (I don't use File Vault)? And if the former, would there be an issue should I upgrade to a new Mac running the current OS? Thank you.