title: why can´t I install Cassandra 3.0?
body: <p>I'm trying to install Cassandra 3.0, but, when I trying to install it on my PC, it gives me this error:</p>
  
  <p><a href="https://i.stack.imgur.com/32fkX.png" rel="nofollow noreferrer">Cassandra 3.0 install error</a></p>
  
  <p>it says:</p>
  
  <pre><code>WARNING! Powershell script execution unavailable.
     Please use 'powershell Set-ExecutionPolicy Unrestricted'
     on this user-account to run cassandra with fully featured
     functionality on this platform.
  Starting with legacy startup options
  Starting Cassandra Server
  Error occurred during initialization of VM
  Could not reserve enough space for 2097152KB object heap 
  </code></pre>
  
  <p>Can anyone help me with this error? Thanks!</p>