[[Design documents|contribute/design]]

[[Relationship with upstream|contribute/relationship_with_upstream]]

[GNOME](http://www.gnome.org), an intuitive and attractive desktop environment ([[More...|doc/first_steps/desktop]])

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[[!meta title="Shutting down Tails"]]

[[!inline pages="install/inc/steps/mac_startup_disks.inline" raw="yes" sort="age"]]

[[!inline pages="doc/first_steps/start/not_entirely.inline" raw="yes" sort="age"]]

[[!inline pages="doc/first_steps/start/not_entirely.inline" raw="yes" sort="age"]]

Start *Disk Utility*.

In the confirmation dialog, click on the **Erase** button to confirm.

<p>If the erase process fails, try [[!toggle id="format"
text="formatting the USB stick using the command line"]] first.</p>

[[!toggleable id="format" text="""

<span class="hide">[[!toggle id="format" text=""]]</span>

Unplug the USB stick from the computer.

It returns a list of the storage devices on the system. For example:

Your USB stick appears as a new device in the list. Check
that its size corresponds to the size of your USB stick.

[[!meta title="Administration password"]]

While your IP address identifies where you are on the Internet, your MAC address identifies which device you are using on the local network. MAC addresses are only useful on the local network and are not sent over the Internet.

Having such a unique identifier used on the local network can harm your privacy. Here are two examples:

1. If you use your laptop to connect to several Wi-Fi networks, the
same MAC address of your Wi-Fi interface is used on all those local networks. Someone
observing those networks can recognize your MAC address and **track your
geographical location**.