title: mount image containing single partition
body: <p>I made an image of a single partition from a disk containing multiple partitions using the following:</p>
  
  <pre><code>#ddrescue -d -r3 /dev/sdb3 sdb3.img sdb3.logfile
  </code></pre>
  
  <p>However, when I try to mount the image using the following:</p>
  
  <pre><code>mount -o loop,ro sdb3.img /media/mymount
  </code></pre>
  
  <p>I get the following error message:</p>
  
  <pre><code>Failed to read last sector (81919999): Invalid argument
  HINTS: Either the volume is a RAID/LDM but it wasn't setup yet,
      or it was not setup correctly (e.g. by not using mdadm --build ...),
      or a wrong device is tried to be mounted,
      or the partition table is corrupt (partition is smaller than NTFS),
      or the NTFS boot sector is corrupt (NTFS size is not valid).
  
  Failed to mount '/dev/loop0': Invalid argument
  The device '/dev/loop0' doesn't seem to have a valid NTFS.
  Maybe the wrong device is used? Or the whole disk instead of a
  partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
  </code></pre>
  
  <p>Any help to resolve the issue would be appreciated.</p>
  
  <p>Regards</p>