You can create other encrypted volumes using *LUKS* to encrypt, for example, another USB stick or an external hard disk.*LUKS* is the standard for disk encryption in Linux.
You can also open *VeraCrypt* encrypted volumes in Tails. *VeraCrypt* is a disk encryption tool for Windows, macOS, and Linux. [[See our documentation about *VeraCrypt*.|veracrypt]]
If you want to create another partition in the free space on the device, click on the free space and then click on the **[[!img lib/list-add.png alt="Create partition" class="symbolic" link="no"]]** button again.
Such encrypted volumes are not hidden. An attacker in possession of the device can know that there is an encrypted volume on it. Take into consideration that you can be forced or tricked to give out its passphrase.
For example, image thumbnails might be created and saved by the other operating system. Or, the contents of files might be indexed by the other operating system.