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<h1>Encrypting a Drive with LUKS and cryptsetup</h1>
<h2>1. Get the drive name</h2>
<pre><code>lsblk</code></pre>
<h2>2. Install cryptsetup</h2>
<pre><code>sudo pacman -S cryptsetup</code></pre>
<h2>3. Format the drive</h2>
<p>To format the drive, you can use cfdisk or any other utility of your choice.</p>
<pre><code>cfdisk /dev/sdaX</code></pre>
<p>Now, delete all the signatures and partitions on the drive. Then, create a filesystem on the drive as follows:</p>
<pre><code>mkfs.ext4 /dev/sdaX</code></pre>
<p>After the FS has been created, create a partition on the drive with cfdisk. After the partition has been created, you can finally start encrypting the drive.</p>
<h2>4. Encrypt the created partition</h2>
<p>List the partition:</p>
<pre><code>lsblk /dev/sdaX</code></pre>
<p>Encrypt the partition:</p>
<pre><code>cryptsetup luksFormat /dev/sda[0-9]</code></pre>
<p>It will ask for a passphrase, make sure to provide a strong passphrase.</p>
<h2>5. Decrypt and create filesystem</h2>
<p>Decrypt the drive:</p>
<pre><code>cryptsetup open /dev/sda[0-9] <name></code></pre>
<p>Make the FS:</p>
<pre><code>mkfs.ext4 /dev/mapper/<name></code></pre>
<h2>6. Re-encrypt after usage</h2>
<pre><code>cryptsetup close <name></code></pre>
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