<h2 id="identifying">Identifying your external storage device</h2>
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[[!img lib/system-run.png alt="Additional partition options" class="symbolic" link="no"]] Click on the [[!img lib/view-more.png alt="Drive Options" class="symbolic" link="no"]] button in the title bar and choose **Format Disk** to erase all the existing partitions on the device.
Click on the [[!img lib/view-more.png alt="Drive Options" class="symbolic" link="no"]] button in the title bar and choose **Format Disk** to erase all the existing partitions on the device.
If you want to securely erasoverwrite all data on the device, choose to <span class="guilabel">**Overwrite existing data with zeroes</span>** in the **Erase** drop-down listmenu.