{{tag>dd clone copy hdd sdd howto}}
====== clone a HDD ======
  * http://blog.tdg5.com/tuning-dd-block-size/
  * https://unix.stackexchange.com/questions/52215/determine-the-size-of-a-block-device

Get size in bytes:
<sxh bash; gutter: false>
blockdev --getsize64 /dev/sda
</sxh>

Get size in 512-byte sectors:
<sxh bash; gutter: false>
blockdev --getsz /dev/sda
</sxh>

clone it with dd:
<sxh bash; gutter: false>
dd bs=256K if=/dev/sdwhatever of=/dev/sdwhatever
</sxh>

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~~DISCUSSION~~