In most cases, this partition is used as a physical volume for LVM so as to protect several partitions (LVM logical volumes) with the same encryption key, including the swap partition (see sidebar SECURITY Encrypted swap partition). The following section lists various methods and tools to create a bootable Linux USB drive. If you are going to install Debian 11 in bare metal, you should create a bootable DVD or drive. Once this step has been completed, and you have returned to the partitioning tool menu, a new partition will be available in an “encrypted volume”, which you can then configure just like any other partition. Go to the official download page and download the Debian 11 iso image according to your machine architecture. The software will then propose to initialize the physical volume with random data (making the localization of the real data more difficult), and will ask you to enter an “encryption passphrase”, which you will have to enter every time you boot your computer in order to access the content of the encrypted partition.
After partitioning the disk containing the physical volume to be made, choose “Configure encrypted volumes”.
To do so, select a partition and indicate that it is to be used as a “physical volume for encryption”. To create an encrypted partition, you must first assign an available partition for this purpose.
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