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<section xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="sec-booting-from-usb">
<title>Booting from a USB Drive</title>
<para>
For systems without CD drive, the NixOS live CD can be booted from a
USB stick. You can use the <literal>dd</literal> utility to write
the image: <literal>dd if=path-to-image of=/dev/sdX</literal>. Be
careful about specifying the correct drive; you can use the
<literal>lsblk</literal> command to get a list of block devices.
</para>
<note>
<title>On macOS</title>
<programlisting>
$ diskutil list
[..]
/dev/diskN (external, physical):
#: TYPE NAME SIZE IDENTIFIER
[..]
$ diskutil unmountDisk diskN
Unmount of all volumes on diskN was successful
$ sudo dd if=nix.iso of=/dev/rdiskN
</programlisting>
<para>
Using the 'raw' <literal>rdiskN</literal> device instead of
<literal>diskN</literal> completes in minutes instead of hours.
After <literal>dd</literal> completes, a GUI dialog "The disk
you inserted was not readable by this computer" will pop up,
which can be ignored.
</para>
</note>
<para>
The <literal>dd</literal> utility will write the image verbatim to
the drive, making it the recommended option for both UEFI and
non-UEFI installations.
</para>
</section>
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