Hey there, sid2016.
If you really do need protection, you could encrypt your drive, although I really recommend that you have a backup copy of your important data on a different drive, just to be on the safe side in case something unexpected happens.
You could take a look at the recommendations from this article: http://lifehacker.com/five-best-file-encryption-tools-5677725
and select the tool which best fits your needs.
Hope that helps.