title: command xen-create-image gives error
body: <p>I want to install domU i tried the command given below.</p>
  
  <pre><code> xen-create-image --hostname=machine-0 --memory=512mb --vcpus=2 --lvm=vg0 --dhcp --pygrub --dist=wheezy --force
  </code></pre>
  
  <p>It gives error and the log look like give below. just see that if you can give me some tips it will be more helpful.</p>
  
  <h2>/var/log/xen-tools/machine-0.log</h2>
  
  <pre><code>I: Retrieving Packages
  I: Validating Packages
  W: Retrying failed download of http://http.debian.net/debian/dists/wheezy/main/binary-amd64/Packages
  I: Retrieving Packages
  I: Validating Packages
   W: Retrying failed download of http://http.debian.net/debian/dists/wheezy/main/binary-amd64/Packages
  I: Retrieving Packages
  I: Validating Packages
  W: Retrying failed download of http://http.debian.net/debian/dists/wheezy/main/binary-amd64/Packages
  I: Retrieving Packages
  I: Validating Packages
  W: Retrying failed download of http://http.debian.net/debian/dists/wheezy/main/binary-amd64/Packages
  I: Retrieving Packages
  I: Validating Packages
  W: Retrying failed download of http://http.debian.net/debian/dists/wheezy/main/binary-amd64/Packages
  I: Retrieving Packages
  I: Validating Packages
  W: Retrying failed download of http://http.debian.net/debian/dists/wheezy/main/binary-amd64/Packages
  W: http://http.debian.net/debian/dists/wheezy/main/binary-amd64/Packages was corrupt
  E: Couldn't download dists/wheezy/main/binary-amd64/Packages
  WARNING (/usr/bin/xt-install-image): The installed system at /tmp/1Ip3F1ZS8l doesn't seem to be a full system.
  WARNING (/usr/bin/xt-install-image): The installed system is missing the common file: /bin/ls.
  WARNING (/usr/bin/xt-install-image): The installed system at /tmp/1Ip3F1ZS8l doesn't seem to be a full system.
  WARNING (/usr/bin/xt-install-image): The installed system is missing the common file: /bin/cp.
  
  Copying files from new installation to host.
  Copying files from /tmp/1Ip3F1ZS8l/var/cache/apt/archives -&gt; /var/cache/apt/archives/
  Done
  Done
  Done
  System installation failed.  Aborting
  umount: /tmp/1Ip3F1ZS8l/proc: not found
  Running command 'umount /tmp/1Ip3F1ZS8l/proc 2&gt;&amp;1' failed with exit code 256.
  Aborting
  </code></pre>