What the wrong with my robots.txt file?

Question

I don't want my website to be visible on Google.So I was put this code in robots.txt file. But a few days ago my website become visible on Google. Here is the code of my robots.txt file below.

User-agent: *
Disallow: /cgi-bin/
Disallow: /private/
Disallow: /tmp/
Disallow: /index.html
Disallow: /images
Disallow: /about.html

Answer 1

User-agent: *
Disallow: /

Answer 2

@Andre What do you mean? You should explain in detail, if you know what's the wrong.