title: $ bundle exec rake db:reset command raising couldn't drop db/development.sqlite3
body: <p>I tried to run <code>$ bundle exec rake db:reset</code> and found the following on console</p>
  
  <pre><code>Couldn't drop db/development.sqlite3 : #&lt;Errno::EACCES: Permission denied - c:/sample_app/db/development.sqlite3&gt;
  db/development.sqlite3 already exists
  -- create_table("users", {:force=&gt;true})
     -&gt; 0.3940s
  -- add_index("users", ["email"], {:name=&gt;"index_users_on_email", :unique=&gt;true})
  
     -&gt; 0.1280s
  -- initialize_schema_migrations_table()
     -&gt; 0.0010s
  -- assume_migrated_upto_version(20120419034627, ["c:/sample_app/db/migrate
  "])
     -&gt; 0.0040s
  </code></pre>
  
  <p>How can I solve it?</p>
  
  <p><strong>Edit</strong> I was following a tutorial and it tells me to run the above command to delete all the data from the database safely. And I am also using admin account.</p>