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        <title>In Place Upgrade Debian 11 Bullseye to 12 Bookworm</title>
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            <h1>In Place Upgrade Debian 11 Bullseye to 12 Bookworm</h1>
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	<li>Log into the Debian 11 device</li>
	<li>Run the following commands in a terminal window
	<div class="codeBlock"># clean apt cache<br />
	sudo apt clean<br />
	# update apt repositories from bullseye to bookworm<br />
	find /etc/apt -type f -name &quot;*.list&quot; -print0 | xargs -0 sudo sed -i.bak &quot;s/bullseye/bookworm/g&quot;<br />
	# add optional non-free repos<br />
	echo &quot;deb https://deb.debian.org/debian/ bookworm main contrib non-free non-free-firmware&quot; | sudo tee /etc/apt/sources.list<br />
	# update software repositories<br />
	sudo apt update<br />
	# install software updates<br />
	sudo apt dist-upgrade -y<br />
	# remove unnecessary packages<br />
	sudo apt autoremove -y<br />
	# clean apt cache<br />
	sudo apt clean<br />
	# reboot<br />
	sudo reboot now</div>
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	<li>That&#39;s it, Debian 11 Bullseye has been updated in place to Debian 12 Bookworm</li>
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