title: Device to small to write image of same device created with dd back to device using win10 image writer echer
body: <p>on a raspberry pi running buster i create a backup image of a raspberry pi 32 Gb SD card with the command</p>
  <pre><code>dd if=/dev/mmcblk0 of=//NAS/backup.img bs=1M conv=sync,noerror iflag=fullblock
  </code></pre>
  <p>the result file is 29,7 GB (31.915.507.712 bytes)</p>
  <p>when i try to use balena etcher to write this file back to the SAME SD card, etcher tells me the SD card is to small. i am told i need additional 512 mb.</p>
  <p>how to resolve this?</p>
  <p>any advice is welcome.</p>