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<section xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:xi="http://www.w3.org/2001/XInclude"
version="5.0"
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 <command>dd</command> utility to write the image: <command>dd if=<replaceable>path-to-image</replaceable> of=<replaceable>/dev/sdX</replaceable></command>. Be careful about specifying the correct drive; you can use the <command>lsblk</command> command to get a list of block devices.
<note>
<title>On macOS</title>
<para>
<screen>
<prompt>$ </prompt>diskutil list
[..]
/dev/diskN (external, physical):
#: TYPE NAME SIZE IDENTIFIER
[..]
<prompt>$ </prompt>diskutil unmountDisk diskN
Unmount of all volumes on diskN was successful
<prompt>$ </prompt>sudo dd if=nix.iso of=/dev/rdiskN
</screen>
Using the 'raw' <command>rdiskN</command> device instead of <command>diskN</command> completes in minutes instead of hours. After <command>dd</command> completes, a GUI dialog "The disk you inserted was not readable by this computer" will pop up, which can be ignored.
</para>
</note>
</para>
<para>
The <command>dd</command> 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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