&gt; If you want to erase a drive fast then use the following command (where sdXXX is the device to erase):<p><pre><code>    dd if=&#x2F;dev&#x2F;zero of=&#x2F;dev&#x2F;sdXXX bs=1048576
</code></pre>
Question: is there a disadvantage to using a higher blocksize? Is the read&#x2F;write speed of the device the only real limit?