Also, using &#x27;rdisk&#x27; instead of the &#x27;disk&#x27; dev-file is much faster: <a href="http:&#x2F;&#x2F;superuser.com&#x2F;questions&#x2F;631592&#x2F;why-is-dev-rdisk-about-20-times-faster-than-dev-disk-in-mac-os-x" rel="nofollow">http:&#x2F;&#x2F;superuser.com&#x2F;questions&#x2F;631592&#x2F;why-is-dev-rdisk-about...</a>